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Finding the Fourth Proportional to 77,876.70, 116,872.65 and 51,572.70

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Solution

The fourth proportional to 77,876.70, 116,872.65 and 51,572.70 is: 77,397.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,876.70 : 116,872.65 = 51,572.70 : x
  2. Step 2: Convert to fraction form
    77,876.70/116,872.65 = 51,572.70/x
  3. Step 3: Cross multiply
    77,876.70x = 116,872.65 × 51,572.70
  4. Step 4: Simplify right side
    77,876.70x = 6,027,438,116.66
  5. Step 5: Solve for x
    x = 6,027,438,116.66/77,876.70
  6. Step 6: Final answer
    x = 77,397.19

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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.