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Finding the Fourth Proportional to 66,124.49, 91,251.52 and 35,909.60

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Solution

The fourth proportional to 66,124.49, 91,251.52 and 35,909.60 is: 49,555.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,124.49 : 91,251.52 = 35,909.60 : x
  2. Step 2: Convert to fraction form
    66,124.49/91,251.52 = 35,909.60/x
  3. Step 3: Cross multiply
    66,124.49x = 91,251.52 × 35,909.60
  4. Step 4: Simplify right side
    66,124.49x = 3,276,805,720.95
  5. Step 5: Solve for x
    x = 3,276,805,720.95/66,124.49
  6. Step 6: Final answer
    x = 49,555.10

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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.