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Finding the Fourth Proportional to 88,732.80, 132,904.80 and 77,068.80

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Solution

The fourth proportional to 88,732.80, 132,904.80 and 77,068.80 is: 115,434.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,732.80 : 132,904.80 = 77,068.80 : x
  2. Step 2: Convert to fraction form
    88,732.80/132,904.80 = 77,068.80/x
  3. Step 3: Cross multiply
    88,732.80x = 132,904.80 × 77,068.80
  4. Step 4: Simplify right side
    88,732.80x = 10,242,813,450.24
  5. Step 5: Solve for x
    x = 10,242,813,450.24/88,732.80
  6. Step 6: Final answer
    x = 115,434.35

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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.