Home / 81,575.95-122,387.61-28,989.53

Finding the Fourth Proportional to 81,575.95, 122,387.61 and 28,989.53

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Solution

The fourth proportional to 81,575.95, 122,387.61 and 28,989.53 is: 43,492.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,575.95 : 122,387.61 = 28,989.53 : x
  2. Step 2: Convert to fraction form
    81,575.95/122,387.61 = 28,989.53/x
  3. Step 3: Cross multiply
    81,575.95x = 122,387.61 × 28,989.53
  4. Step 4: Simplify right side
    81,575.95x = 3,547,959,291.72
  5. Step 5: Solve for x
    x = 3,547,959,291.72/81,575.95
  6. Step 6: Final answer
    x = 43,492.71

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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.