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Finding the Fourth Proportional to 115,553.61, 159,465.04 and 67,807.76

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Solution

The fourth proportional to 115,553.61, 159,465.04 and 67,807.76 is: 93,575.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,553.61 : 159,465.04 = 67,807.76 : x
  2. Step 2: Convert to fraction form
    115,553.61/159,465.04 = 67,807.76/x
  3. Step 3: Cross multiply
    115,553.61x = 159,465.04 × 67,807.76
  4. Step 4: Simplify right side
    115,553.61x = 10,812,966,193.87
  5. Step 5: Solve for x
    x = 10,812,966,193.87/115,553.61
  6. Step 6: Final answer
    x = 93,575.32

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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.