Home / 71,040.39-106,565.85-20,437.38

Finding the Fourth Proportional to 71,040.39, 106,565.85 and 20,437.38

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Solution

The fourth proportional to 71,040.39, 106,565.85 and 20,437.38 is: 30,657.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,040.39 : 106,565.85 = 20,437.38 : x
  2. Step 2: Convert to fraction form
    71,040.39/106,565.85 = 20,437.38/x
  3. Step 3: Cross multiply
    71,040.39x = 106,565.85 × 20,437.38
  4. Step 4: Simplify right side
    71,040.39x = 2,177,926,771.47
  5. Step 5: Solve for x
    x = 2,177,926,771.47/71,040.39
  6. Step 6: Final answer
    x = 30,657.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.