Home / 83,042.80-124,564.20-30,445.45

Finding the Fourth Proportional to 83,042.80, 124,564.20 and 30,445.45

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Solution

The fourth proportional to 83,042.80, 124,564.20 and 30,445.45 is: 45,668.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,042.80 : 124,564.20 = 30,445.45 : x
  2. Step 2: Convert to fraction form
    83,042.80/124,564.20 = 30,445.45/x
  3. Step 3: Cross multiply
    83,042.80x = 124,564.20 × 30,445.45
  4. Step 4: Simplify right side
    83,042.80x = 3,792,413,122.89
  5. Step 5: Solve for x
    x = 3,792,413,122.89/83,042.80
  6. Step 6: Final answer
    x = 45,668.18

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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.