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Finding the Fourth Proportional to 90,472.98, 135,666.33 and 40,553.49

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Solution

The fourth proportional to 90,472.98, 135,666.33 and 40,553.49 is: 60,810.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,472.98 : 135,666.33 = 40,553.49 : x
  2. Step 2: Convert to fraction form
    90,472.98/135,666.33 = 40,553.49/x
  3. Step 3: Cross multiply
    90,472.98x = 135,666.33 × 40,553.49
  4. Step 4: Simplify right side
    90,472.98x = 5,501,743,156.99
  5. Step 5: Solve for x
    x = 5,501,743,156.99/90,472.98
  6. Step 6: Final answer
    x = 60,810.90

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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.