Home / 57,154.79-78,874.25-31,661.55

Finding the Fourth Proportional to 57,154.79, 78,874.25 and 31,661.55

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Solution

The fourth proportional to 57,154.79, 78,874.25 and 31,661.55 is: 43,693.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,154.79 : 78,874.25 = 31,661.55 : x
  2. Step 2: Convert to fraction form
    57,154.79/78,874.25 = 31,661.55/x
  3. Step 3: Cross multiply
    57,154.79x = 78,874.25 × 31,661.55
  4. Step 4: Simplify right side
    57,154.79x = 2,497,281,010.09
  5. Step 5: Solve for x
    x = 2,497,281,010.09/57,154.79
  6. Step 6: Final answer
    x = 43,693.29

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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.