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Finding the Fourth Proportional to 84,758.46, 127,141.29 and 28,599.90

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Solution

The fourth proportional to 84,758.46, 127,141.29 and 28,599.90 is: 42,901.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,758.46 : 127,141.29 = 28,599.90 : x
  2. Step 2: Convert to fraction form
    84,758.46/127,141.29 = 28,599.90/x
  3. Step 3: Cross multiply
    84,758.46x = 127,141.29 × 28,599.90
  4. Step 4: Simplify right side
    84,758.46x = 3,636,228,179.87
  5. Step 5: Solve for x
    x = 3,636,228,179.87/84,758.46
  6. Step 6: Final answer
    x = 42,901.06

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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.