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Finding the Fourth Proportional to 66,885.92, 100,320.68 and 38,821.26

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Solution

The fourth proportional to 66,885.92, 100,320.68 and 38,821.26 is: 58,227.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,885.92 : 100,320.68 = 38,821.26 : x
  2. Step 2: Convert to fraction form
    66,885.92/100,320.68 = 38,821.26/x
  3. Step 3: Cross multiply
    66,885.92x = 100,320.68 × 38,821.26
  4. Step 4: Simplify right side
    66,885.92x = 3,894,575,201.66
  5. Step 5: Solve for x
    x = 3,894,575,201.66/66,885.92
  6. Step 6: Final answer
    x = 58,227.13

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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.