Home / 81,237.60-121,800.78-43,292.52

Finding the Fourth Proportional to 81,237.60, 121,800.78 and 43,292.52

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Solution

The fourth proportional to 81,237.60, 121,800.78 and 43,292.52 is: 64,909.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,237.60 : 121,800.78 = 43,292.52 : x
  2. Step 2: Convert to fraction form
    81,237.60/121,800.78 = 43,292.52/x
  3. Step 3: Cross multiply
    81,237.60x = 121,800.78 × 43,292.52
  4. Step 4: Simplify right side
    81,237.60x = 5,273,062,704.17
  5. Step 5: Solve for x
    x = 5,273,062,704.17/81,237.60
  6. Step 6: Final answer
    x = 64,909.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.