Home / 71,836.47-99,137.42-40,005.38

Finding the Fourth Proportional to 71,836.47, 99,137.42 and 40,005.38

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Solution

The fourth proportional to 71,836.47, 99,137.42 and 40,005.38 is: 55,209.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,836.47 : 99,137.42 = 40,005.38 : x
  2. Step 2: Convert to fraction form
    71,836.47/99,137.42 = 40,005.38/x
  3. Step 3: Cross multiply
    71,836.47x = 99,137.42 × 40,005.38
  4. Step 4: Simplify right side
    71,836.47x = 3,966,029,463.61
  5. Step 5: Solve for x
    x = 3,966,029,463.61/71,836.47
  6. Step 6: Final answer
    x = 55,209.14

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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.