Home / 81,085.28-121,596.60-38,938.52

Finding the Fourth Proportional to 81,085.28, 121,596.60 and 38,938.52

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Solution

The fourth proportional to 81,085.28, 121,596.60 and 38,938.52 is: 58,392.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,085.28 : 121,596.60 = 38,938.52 : x
  2. Step 2: Convert to fraction form
    81,085.28/121,596.60 = 38,938.52/x
  3. Step 3: Cross multiply
    81,085.28x = 121,596.60 × 38,938.52
  4. Step 4: Simplify right side
    81,085.28x = 4,734,791,641.03
  5. Step 5: Solve for x
    x = 4,734,791,641.03/81,085.28
  6. Step 6: Final answer
    x = 58,392.74

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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.