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Finding the Fourth Proportional to 79,380.16, 109,550.22 and 52,475.92

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Solution

The fourth proportional to 79,380.16, 109,550.22 and 52,475.92 is: 72,420.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,380.16 : 109,550.22 = 52,475.92 : x
  2. Step 2: Convert to fraction form
    79,380.16/109,550.22 = 52,475.92/x
  3. Step 3: Cross multiply
    79,380.16x = 109,550.22 × 52,475.92
  4. Step 4: Simplify right side
    79,380.16x = 5,748,748,580.70
  5. Step 5: Solve for x
    x = 5,748,748,580.70/79,380.16
  6. Step 6: Final answer
    x = 72,420.47

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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.