Home / 90,265.09-124,572.84-49,982.60

Finding the Fourth Proportional to 90,265.09, 124,572.84 and 49,982.60

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Solution

The fourth proportional to 90,265.09, 124,572.84 and 49,982.60 is: 68,979.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,265.09 : 124,572.84 = 49,982.60 : x
  2. Step 2: Convert to fraction form
    90,265.09/124,572.84 = 49,982.60/x
  3. Step 3: Cross multiply
    90,265.09x = 124,572.84 × 49,982.60
  4. Step 4: Simplify right side
    90,265.09x = 6,226,474,182.67
  5. Step 5: Solve for x
    x = 6,226,474,182.67/90,265.09
  6. Step 6: Final answer
    x = 68,979.87

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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.