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Finding the Fourth Proportional to 66,625.52, 91,952.58 and 42,418.74

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Solution

The fourth proportional to 66,625.52, 91,952.58 and 42,418.74 is: 58,543.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,625.52 : 91,952.58 = 42,418.74 : x
  2. Step 2: Convert to fraction form
    66,625.52/91,952.58 = 42,418.74/x
  3. Step 3: Cross multiply
    66,625.52x = 91,952.58 × 42,418.74
  4. Step 4: Simplify right side
    66,625.52x = 3,900,512,583.35
  5. Step 5: Solve for x
    x = 3,900,512,583.35/66,625.52
  6. Step 6: Final answer
    x = 58,543.83

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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.