Home / 90,402.31-124,743.65-50,115.70

Finding the Fourth Proportional to 90,402.31, 124,743.65 and 50,115.70

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Solution

The fourth proportional to 90,402.31, 124,743.65 and 50,115.70 is: 69,153.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,402.31 : 124,743.65 = 50,115.70 : x
  2. Step 2: Convert to fraction form
    90,402.31/124,743.65 = 50,115.70/x
  3. Step 3: Cross multiply
    90,402.31x = 124,743.65 × 50,115.70
  4. Step 4: Simplify right side
    90,402.31x = 6,251,615,340.31
  5. Step 5: Solve for x
    x = 6,251,615,340.31/90,402.31
  6. Step 6: Final answer
    x = 69,153.27

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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.