Home / 57,720.40-86,613.24-31,426.96

Finding the Fourth Proportional to 57,720.40, 86,613.24 and 31,426.96

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Solution

The fourth proportional to 57,720.40, 86,613.24 and 31,426.96 is: 47,158.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,720.40 : 86,613.24 = 31,426.96 : x
  2. Step 2: Convert to fraction form
    57,720.40/86,613.24 = 31,426.96/x
  3. Step 3: Cross multiply
    57,720.40x = 86,613.24 × 31,426.96
  4. Step 4: Simplify right side
    57,720.40x = 2,721,990,828.95
  5. Step 5: Solve for x
    x = 2,721,990,828.95/57,720.40
  6. Step 6: Final answer
    x = 47,158.21

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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.