Home / 89,931.87-124,104.45-49,644.60

Finding the Fourth Proportional to 89,931.87, 124,104.45 and 49,644.60

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Solution

The fourth proportional to 89,931.87, 124,104.45 and 49,644.60 is: 68,508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,931.87 : 124,104.45 = 49,644.60 : x
  2. Step 2: Convert to fraction form
    89,931.87/124,104.45 = 49,644.60/x
  3. Step 3: Cross multiply
    89,931.87x = 124,104.45 × 49,644.60
  4. Step 4: Simplify right side
    89,931.87x = 6,161,115,499.25
  5. Step 5: Solve for x
    x = 6,161,115,499.25/89,931.87
  6. Step 6: Final answer
    x = 68,508.70

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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.