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Finding the Fourth Proportional to 76,384.19, 105,410.18 and 42,850.19

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Solution

The fourth proportional to 76,384.19, 105,410.18 and 42,850.19 is: 59,133.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,384.19 : 105,410.18 = 42,850.19 : x
  2. Step 2: Convert to fraction form
    76,384.19/105,410.18 = 42,850.19/x
  3. Step 3: Cross multiply
    76,384.19x = 105,410.18 × 42,850.19
  4. Step 4: Simplify right side
    76,384.19x = 4,516,846,240.93
  5. Step 5: Solve for x
    x = 4,516,846,240.93/76,384.19
  6. Step 6: Final answer
    x = 59,133.26

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Half scale
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Double scale
Find fourth proportional to 76,385.19, 105,411.56 and 42,851.19
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.