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Finding the Fourth Proportional to 90,714, 125,185.32 and 52,988.52

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Solution

The fourth proportional to 90,714, 125,185.32 and 52,988.52 is: 73,124.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,714 : 125,185.32 = 52,988.52 : x
  2. Step 2: Convert to fraction form
    90,714/125,185.32 = 52,988.52/x
  3. Step 3: Cross multiply
    90,714x = 125,185.32 × 52,988.52
  4. Step 4: Simplify right side
    90,714x = 6,633,384,832.53
  5. Step 5: Solve for x
    x = 6,633,384,832.53/90,714
  6. Step 6: Final answer
    x = 73,124.16

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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.