Home / 57,154.68-78,873.45-31,314.15

Finding the Fourth Proportional to 57,154.68, 78,873.45 and 31,314.15

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Solution

The fourth proportional to 57,154.68, 78,873.45 and 31,314.15 is: 43,213.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,154.68 : 78,873.45 = 31,314.15 : x
  2. Step 2: Convert to fraction form
    57,154.68/78,873.45 = 31,314.15/x
  3. Step 3: Cross multiply
    57,154.68x = 78,873.45 × 31,314.15
  4. Step 4: Simplify right side
    57,154.68x = 2,469,854,966.03
  5. Step 5: Solve for x
    x = 2,469,854,966.03/57,154.68
  6. Step 6: Final answer
    x = 43,213.52

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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.