Home / 78,304.12-108,059.10-42,493.20

Finding the Fourth Proportional to 78,304.12, 108,059.10 and 42,493.20

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Solution

The fourth proportional to 78,304.12, 108,059.10 and 42,493.20 is: 58,640.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,304.12 : 108,059.10 = 42,493.20 : x
  2. Step 2: Convert to fraction form
    78,304.12/108,059.10 = 42,493.20/x
  3. Step 3: Cross multiply
    78,304.12x = 108,059.10 × 42,493.20
  4. Step 4: Simplify right side
    78,304.12x = 4,591,776,948.12
  5. Step 5: Solve for x
    x = 4,591,776,948.12/78,304.12
  6. Step 6: Final answer
    x = 58,640.30

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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.