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Finding the Fourth Proportional to 66,691.77, 92,021.91 and 38,010.89

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Solution

The fourth proportional to 66,691.77, 92,021.91 and 38,010.89 is: 52,447.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,691.77 : 92,021.91 = 38,010.89 : x
  2. Step 2: Convert to fraction form
    66,691.77/92,021.91 = 38,010.89/x
  3. Step 3: Cross multiply
    66,691.77x = 92,021.91 × 38,010.89
  4. Step 4: Simplify right side
    66,691.77x = 3,497,834,238.49
  5. Step 5: Solve for x
    x = 3,497,834,238.49/66,691.77
  6. Step 6: Final answer
    x = 52,447.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.