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Finding the Fourth Proportional to 71,898.76, 99,222.33 and 40,067.38

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Solution

The fourth proportional to 71,898.76, 99,222.33 and 40,067.38 is: 55,294.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,898.76 : 99,222.33 = 40,067.38 : x
  2. Step 2: Convert to fraction form
    71,898.76/99,222.33 = 40,067.38/x
  3. Step 3: Cross multiply
    71,898.76x = 99,222.33 × 40,067.38
  4. Step 4: Simplify right side
    71,898.76x = 3,975,578,800.60
  5. Step 5: Solve for x
    x = 3,975,578,800.60/71,898.76
  6. Step 6: Final answer
    x = 55,294.12

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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.