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Finding the Fourth Proportional to 99,951.48, 137,932.80 and 56,930.96

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Solution

The fourth proportional to 99,951.48, 137,932.80 and 56,930.96 is: 78,564.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,951.48 : 137,932.80 = 56,930.96 : x
  2. Step 2: Convert to fraction form
    99,951.48/137,932.80 = 56,930.96/x
  3. Step 3: Cross multiply
    99,951.48x = 137,932.80 × 56,930.96
  4. Step 4: Simplify right side
    99,951.48x = 7,852,646,719.49
  5. Step 5: Solve for x
    x = 7,852,646,719.49/99,951.48
  6. Step 6: Final answer
    x = 78,564.59

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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.