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Finding the Fourth Proportional to 75,010.80, 112,516.20 and 69,543.30

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Solution

The fourth proportional to 75,010.80, 112,516.20 and 69,543.30 is: 104,314.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,010.80 : 112,516.20 = 69,543.30 : x
  2. Step 2: Convert to fraction form
    75,010.80/112,516.20 = 69,543.30/x
  3. Step 3: Cross multiply
    75,010.80x = 112,516.20 × 69,543.30
  4. Step 4: Simplify right side
    75,010.80x = 7,824,747,851.46
  5. Step 5: Solve for x
    x = 7,824,747,851.46/75,010.80
  6. Step 6: Final answer
    x = 104,314.95

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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.