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Finding the Fourth Proportional to 53,191.20, 79,713.90 and 43,349.70

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Solution

The fourth proportional to 53,191.20, 79,713.90 and 43,349.70 is: 64,965.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,191.20 : 79,713.90 = 43,349.70 : x
  2. Step 2: Convert to fraction form
    53,191.20/79,713.90 = 43,349.70/x
  3. Step 3: Cross multiply
    53,191.20x = 79,713.90 × 43,349.70
  4. Step 4: Simplify right side
    53,191.20x = 3,455,573,650.83
  5. Step 5: Solve for x
    x = 3,455,573,650.83/53,191.20
  6. Step 6: Final answer
    x = 64,965.14

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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.