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Finding the Fourth Proportional to 115,491.92, 159,368.48 and 64,497.58

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Solution

The fourth proportional to 115,491.92, 159,368.48 and 64,497.58 is: 89,000.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,491.92 : 159,368.48 = 64,497.58 : x
  2. Step 2: Convert to fraction form
    115,491.92/159,368.48 = 64,497.58/x
  3. Step 3: Cross multiply
    115,491.92x = 159,368.48 × 64,497.58
  4. Step 4: Simplify right side
    115,491.92x = 10,278,881,121.35
  5. Step 5: Solve for x
    x = 10,278,881,121.35/115,491.92
  6. Step 6: Final answer
    x = 89,000.86

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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.