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Finding the Fourth Proportional to 79,134.72, 109,207.20 and 53,992.32

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Solution

The fourth proportional to 79,134.72, 109,207.20 and 53,992.32 is: 74,510.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,134.72 : 109,207.20 = 53,992.32 : x
  2. Step 2: Convert to fraction form
    79,134.72/109,207.20 = 53,992.32/x
  3. Step 3: Cross multiply
    79,134.72x = 109,207.20 × 53,992.32
  4. Step 4: Simplify right side
    79,134.72x = 5,896,350,088.70
  5. Step 5: Solve for x
    x = 5,896,350,088.70/79,134.72
  6. Step 6: Final answer
    x = 74,510.28

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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.