Home / 56,123.28-77,449.77-30,972.78

Finding the Fourth Proportional to 56,123.28, 77,449.77 and 30,972.78

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Solution

The fourth proportional to 56,123.28, 77,449.77 and 30,972.78 is: 42,742.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,123.28 : 77,449.77 = 30,972.78 : x
  2. Step 2: Convert to fraction form
    56,123.28/77,449.77 = 30,972.78/x
  3. Step 3: Cross multiply
    56,123.28x = 77,449.77 × 30,972.78
  4. Step 4: Simplify right side
    56,123.28x = 2,398,834,687.26
  5. Step 5: Solve for x
    x = 2,398,834,687.26/56,123.28
  6. Step 6: Final answer
    x = 42,742.24

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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.