Home / 71,941.68-99,272.28-40,107.60

Finding the Fourth Proportional to 71,941.68, 99,272.28 and 40,107.60

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Solution

The fourth proportional to 71,941.68, 99,272.28 and 40,107.60 is: 55,344.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,941.68 : 99,272.28 = 40,107.60 : x
  2. Step 2: Convert to fraction form
    71,941.68/99,272.28 = 40,107.60/x
  3. Step 3: Cross multiply
    71,941.68x = 99,272.28 × 40,107.60
  4. Step 4: Simplify right side
    71,941.68x = 3,981,572,897.33
  5. Step 5: Solve for x
    x = 3,981,572,897.33/71,941.68
  6. Step 6: Final answer
    x = 55,344.45

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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.