Home / 57,141.30-78,854.13-31,991.70

Finding the Fourth Proportional to 57,141.30, 78,854.13 and 31,991.70

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Solution

The fourth proportional to 57,141.30, 78,854.13 and 31,991.70 is: 44,148.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,141.30 : 78,854.13 = 31,991.70 : x
  2. Step 2: Convert to fraction form
    57,141.30/78,854.13 = 31,991.70/x
  3. Step 3: Cross multiply
    57,141.30x = 78,854.13 × 31,991.70
  4. Step 4: Simplify right side
    57,141.30x = 2,522,677,670.72
  5. Step 5: Solve for x
    x = 2,522,677,670.72/57,141.30
  6. Step 6: Final answer
    x = 44,148.06

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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.