Home / 90,387.16-124,732.16-52,146.80

Finding the Fourth Proportional to 90,387.16, 124,732.16 and 52,146.80

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Solution

The fourth proportional to 90,387.16, 124,732.16 and 52,146.80 is: 71,961.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,387.16 : 124,732.16 = 52,146.80 : x
  2. Step 2: Convert to fraction form
    90,387.16/124,732.16 = 52,146.80/x
  3. Step 3: Cross multiply
    90,387.16x = 124,732.16 × 52,146.80
  4. Step 4: Simplify right side
    90,387.16x = 6,504,383,001.09
  5. Step 5: Solve for x
    x = 6,504,383,001.09/90,387.16
  6. Step 6: Final answer
    x = 71,961.36

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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.