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Finding the Fourth Proportional to 76,303.68, 105,295.95 and 42,310.14

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Solution

The fourth proportional to 76,303.68, 105,295.95 and 42,310.14 is: 58,386.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,303.68 : 105,295.95 = 42,310.14 : x
  2. Step 2: Convert to fraction form
    76,303.68/105,295.95 = 42,310.14/x
  3. Step 3: Cross multiply
    76,303.68x = 105,295.95 × 42,310.14
  4. Step 4: Simplify right side
    76,303.68x = 4,455,086,385.93
  5. Step 5: Solve for x
    x = 4,455,086,385.93/76,303.68
  6. Step 6: Final answer
    x = 58,386.26

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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.