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Finding the Fourth Proportional to 90,077.88, 124,322.88 and 52,374

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Solution

The fourth proportional to 90,077.88, 124,322.88 and 52,374 is: 72,285.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,077.88 : 124,322.88 = 52,374 : x
  2. Step 2: Convert to fraction form
    90,077.88/124,322.88 = 52,374/x
  3. Step 3: Cross multiply
    90,077.88x = 124,322.88 × 52,374
  4. Step 4: Simplify right side
    90,077.88x = 6,511,286,517.12
  5. Step 5: Solve for x
    x = 6,511,286,517.12/90,077.88
  6. Step 6: Final answer
    x = 72,285.08

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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.