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Finding the Fourth Proportional to 78,562.80, 117,844.20 and 34,210.80

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Solution

The fourth proportional to 78,562.80, 117,844.20 and 34,210.80 is: 51,316.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,562.80 : 117,844.20 = 34,210.80 : x
  2. Step 2: Convert to fraction form
    78,562.80/117,844.20 = 34,210.80/x
  3. Step 3: Cross multiply
    78,562.80x = 117,844.20 × 34,210.80
  4. Step 4: Simplify right side
    78,562.80x = 4,031,544,357.36
  5. Step 5: Solve for x
    x = 4,031,544,357.36/78,562.80
  6. Step 6: Final answer
    x = 51,316.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.