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Finding the Fourth Proportional to 71,959.65, 99,335.03 and 45,117.45

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Solution

The fourth proportional to 71,959.65, 99,335.03 and 45,117.45 is: 62,281.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,959.65 : 99,335.03 = 45,117.45 : x
  2. Step 2: Convert to fraction form
    71,959.65/99,335.03 = 45,117.45/x
  3. Step 3: Cross multiply
    71,959.65x = 99,335.03 × 45,117.45
  4. Step 4: Simplify right side
    71,959.65x = 4,481,743,023.69
  5. Step 5: Solve for x
    x = 4,481,743,023.69/71,959.65
  6. Step 6: Final answer
    x = 62,281.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.