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Finding the Fourth Proportional to 79,101.64, 109,046.74 and 56,401.29

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Solution

The fourth proportional to 79,101.64, 109,046.74 and 56,401.29 is: 77,752.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,101.64 : 109,046.74 = 56,401.29 : x
  2. Step 2: Convert to fraction form
    79,101.64/109,046.74 = 56,401.29/x
  3. Step 3: Cross multiply
    79,101.64x = 109,046.74 × 56,401.29
  4. Step 4: Simplify right side
    79,101.64x = 6,150,376,771.04
  5. Step 5: Solve for x
    x = 6,150,376,771.04/79,101.64
  6. Step 6: Final answer
    x = 77,752.83

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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.