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Finding the Fourth Proportional to 66,591.78, 91,899.45 and 38,297.49

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Solution

The fourth proportional to 66,591.78, 91,899.45 and 38,297.49 is: 52,852.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,591.78 : 91,899.45 = 38,297.49 : x
  2. Step 2: Convert to fraction form
    66,591.78/91,899.45 = 38,297.49/x
  3. Step 3: Cross multiply
    66,591.78x = 91,899.45 × 38,297.49
  4. Step 4: Simplify right side
    66,591.78x = 3,519,518,267.38
  5. Step 5: Solve for x
    x = 3,519,518,267.38/66,591.78
  6. Step 6: Final answer
    x = 52,852.14

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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.