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Finding the Fourth Proportional to 79,590.64, 109,838.28 and 47,747.92

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Solution

The fourth proportional to 79,590.64, 109,838.28 and 47,747.92 is: 65,894.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,590.64 : 109,838.28 = 47,747.92 : x
  2. Step 2: Convert to fraction form
    79,590.64/109,838.28 = 47,747.92/x
  3. Step 3: Cross multiply
    79,590.64x = 109,838.28 × 47,747.92
  4. Step 4: Simplify right side
    79,590.64x = 5,244,549,406.38
  5. Step 5: Solve for x
    x = 5,244,549,406.38/79,590.64
  6. Step 6: Final answer
    x = 65,894.05

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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.