Home / 56,874.60-78,487.08-31,725.72

Finding the Fourth Proportional to 56,874.60, 78,487.08 and 31,725.72

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Solution

The fourth proportional to 56,874.60, 78,487.08 and 31,725.72 is: 43,781.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,874.60 : 78,487.08 = 31,725.72 : x
  2. Step 2: Convert to fraction form
    56,874.60/78,487.08 = 31,725.72/x
  3. Step 3: Cross multiply
    56,874.60x = 78,487.08 × 31,725.72
  4. Step 4: Simplify right side
    56,874.60x = 2,490,059,123.70
  5. Step 5: Solve for x
    x = 2,490,059,123.70/56,874.60
  6. Step 6: Final answer
    x = 43,781.57

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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.