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Finding the Fourth Proportional to 99,349.71, 137,097.05 and 56,910.97

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Solution

The fourth proportional to 99,349.71, 137,097.05 and 56,910.97 is: 78,533.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,349.71 : 137,097.05 = 56,910.97 : x
  2. Step 2: Convert to fraction form
    99,349.71/137,097.05 = 56,910.97/x
  3. Step 3: Cross multiply
    99,349.71x = 137,097.05 × 56,910.97
  4. Step 4: Simplify right side
    99,349.71x = 7,802,326,099.64
  5. Step 5: Solve for x
    x = 7,802,326,099.64/99,349.71
  6. Step 6: Final answer
    x = 78,533.96

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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.