Home / 83,428.65-125,143.16-20,248.52

Finding the Fourth Proportional to 83,428.65, 125,143.16 and 20,248.52

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Solution

The fourth proportional to 83,428.65, 125,143.16 and 20,248.52 is: 30,372.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,428.65 : 125,143.16 = 20,248.52 : x
  2. Step 2: Convert to fraction form
    83,428.65/125,143.16 = 20,248.52/x
  3. Step 3: Cross multiply
    83,428.65x = 125,143.16 × 20,248.52
  4. Step 4: Simplify right side
    83,428.65x = 2,533,963,051.16
  5. Step 5: Solve for x
    x = 2,533,963,051.16/83,428.65
  6. Step 6: Final answer
    x = 30,372.82

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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.