Home / 81,320.68-121,981.02-34,540.84

Finding the Fourth Proportional to 81,320.68, 121,981.02 and 34,540.84

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Solution

The fourth proportional to 81,320.68, 121,981.02 and 34,540.84 is: 51,811.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,320.68 : 121,981.02 = 34,540.84 : x
  2. Step 2: Convert to fraction form
    81,320.68/121,981.02 = 34,540.84/x
  3. Step 3: Cross multiply
    81,320.68x = 121,981.02 × 34,540.84
  4. Step 4: Simplify right side
    81,320.68x = 4,213,326,894.86
  5. Step 5: Solve for x
    x = 4,213,326,894.86/81,320.68
  6. Step 6: Final answer
    x = 51,811.26

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Similar ratio
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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.