Home / 71,988.76-99,351.39-40,160.62

Finding the Fourth Proportional to 71,988.76, 99,351.39 and 40,160.62

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Solution

The fourth proportional to 71,988.76, 99,351.39 and 40,160.62 is: 55,425.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,988.76 : 99,351.39 = 40,160.62 : x
  2. Step 2: Convert to fraction form
    71,988.76/99,351.39 = 40,160.62/x
  3. Step 3: Cross multiply
    71,988.76x = 99,351.39 × 40,160.62
  4. Step 4: Simplify right side
    71,988.76x = 3,990,013,420.26
  5. Step 5: Solve for x
    x = 3,990,013,420.26/71,988.76
  6. Step 6: Final answer
    x = 55,425.51

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1.5x scale

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.