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Finding the Fourth Proportional to 60,857.38, 91,290.89 and 21,423.34

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Solution

The fourth proportional to 60,857.38, 91,290.89 and 21,423.34 is: 32,136.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,857.38 : 91,290.89 = 21,423.34 : x
  2. Step 2: Convert to fraction form
    60,857.38/91,290.89 = 21,423.34/x
  3. Step 3: Cross multiply
    60,857.38x = 91,290.89 × 21,423.34
  4. Step 4: Simplify right side
    60,857.38x = 1,955,755,775.37
  5. Step 5: Solve for x
    x = 1,955,755,775.37/60,857.38
  6. Step 6: Final answer
    x = 32,136.71

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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.