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Finding the Fourth Proportional to 89,102.80, 133,690.20 and 39,192.40

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Solution

The fourth proportional to 89,102.80, 133,690.20 and 39,192.40 is: 58,804.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,102.80 : 133,690.20 = 39,192.40 : x
  2. Step 2: Convert to fraction form
    89,102.80/133,690.20 = 39,192.40/x
  3. Step 3: Cross multiply
    89,102.80x = 133,690.20 × 39,192.40
  4. Step 4: Simplify right side
    89,102.80x = 5,239,639,794.48
  5. Step 5: Solve for x
    x = 5,239,639,794.48/89,102.80
  6. Step 6: Final answer
    x = 58,804.43

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1.5x scale

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.