Home / 71,434.48-107,141.18-18,847.66

Finding the Fourth Proportional to 71,434.48, 107,141.18 and 18,847.66

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Solution

The fourth proportional to 71,434.48, 107,141.18 and 18,847.66 is: 28,268.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,434.48 : 107,141.18 = 18,847.66 : x
  2. Step 2: Convert to fraction form
    71,434.48/107,141.18 = 18,847.66/x
  3. Step 3: Cross multiply
    71,434.48x = 107,141.18 × 18,847.66
  4. Step 4: Simplify right side
    71,434.48x = 2,019,359,996.93
  5. Step 5: Solve for x
    x = 2,019,359,996.93/71,434.48
  6. Step 6: Final answer
    x = 28,268.70

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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.