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Finding the Fourth Proportional to 71,565.60, 107,434.80 and 71,047.20

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Solution

The fourth proportional to 71,565.60, 107,434.80 and 71,047.20 is: 106,656.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,565.60 : 107,434.80 = 71,047.20 : x
  2. Step 2: Convert to fraction form
    71,565.60/107,434.80 = 71,047.20/x
  3. Step 3: Cross multiply
    71,565.60x = 107,434.80 × 71,047.20
  4. Step 4: Simplify right side
    71,565.60x = 7,632,941,722.56
  5. Step 5: Solve for x
    x = 7,632,941,722.56/71,565.60
  6. Step 6: Final answer
    x = 106,656.57

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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.