Home / 71,984.60-99,338.68-40,153.48

Finding the Fourth Proportional to 71,984.60, 99,338.68 and 40,153.48

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Solution

The fourth proportional to 71,984.60, 99,338.68 and 40,153.48 is: 55,411.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,984.60 : 99,338.68 = 40,153.48 : x
  2. Step 2: Convert to fraction form
    71,984.60/99,338.68 = 40,153.48/x
  3. Step 3: Cross multiply
    71,984.60x = 99,338.68 × 40,153.48
  4. Step 4: Simplify right side
    71,984.60x = 3,988,793,700.61
  5. Step 5: Solve for x
    x = 3,988,793,700.61/71,984.60
  6. Step 6: Final answer
    x = 55,411.76

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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.