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Finding the Fourth Proportional to 79,102.87, 109,156.48 and 45,112.79

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Solution

The fourth proportional to 79,102.87, 109,156.48 and 45,112.79 is: 62,252.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,102.87 : 109,156.48 = 45,112.79 : x
  2. Step 2: Convert to fraction form
    79,102.87/109,156.48 = 45,112.79/x
  3. Step 3: Cross multiply
    79,102.87x = 109,156.48 × 45,112.79
  4. Step 4: Simplify right side
    79,102.87x = 4,924,353,359.38
  5. Step 5: Solve for x
    x = 4,924,353,359.38/79,102.87
  6. Step 6: Final answer
    x = 62,252.52

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1.5x scale

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.