Home / 67,981.28-101,959.16-28,538.73

Finding the Fourth Proportional to 67,981.28, 101,959.16 and 28,538.73

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Solution

The fourth proportional to 67,981.28, 101,959.16 and 28,538.73 is: 42,802.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,981.28 : 101,959.16 = 28,538.73 : x
  2. Step 2: Convert to fraction form
    67,981.28/101,959.16 = 28,538.73/x
  3. Step 3: Cross multiply
    67,981.28x = 101,959.16 × 28,538.73
  4. Step 4: Simplify right side
    67,981.28x = 2,909,784,795.57
  5. Step 5: Solve for x
    x = 2,909,784,795.57/67,981.28
  6. Step 6: Final answer
    x = 42,802.74

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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.