Home / 90,420.17-124,759.67-54,115.97

Finding the Fourth Proportional to 90,420.17, 124,759.67 and 54,115.97

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Solution

The fourth proportional to 90,420.17, 124,759.67 and 54,115.97 is: 74,667.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,420.17 : 124,759.67 = 54,115.97 : x
  2. Step 2: Convert to fraction form
    90,420.17/124,759.67 = 54,115.97/x
  3. Step 3: Cross multiply
    90,420.17x = 124,759.67 × 54,115.97
  4. Step 4: Simplify right side
    90,420.17x = 6,751,489,664.55
  5. Step 5: Solve for x
    x = 6,751,489,664.55/90,420.17
  6. Step 6: Final answer
    x = 74,667.96

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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.