Home / 78,561.28-108,416.82-42,753.56

Finding the Fourth Proportional to 78,561.28, 108,416.82 and 42,753.56

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Solution

The fourth proportional to 78,561.28, 108,416.82 and 42,753.56 is: 59,001.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,561.28 : 108,416.82 = 42,753.56 : x
  2. Step 2: Convert to fraction form
    78,561.28/108,416.82 = 42,753.56/x
  3. Step 3: Cross multiply
    78,561.28x = 108,416.82 × 42,753.56
  4. Step 4: Simplify right side
    78,561.28x = 4,635,204,476.80
  5. Step 5: Solve for x
    x = 4,635,204,476.80/78,561.28
  6. Step 6: Final answer
    x = 59,001.14

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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.