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Finding the Fourth Proportional to 79,219.80, 109,282.47 and 53,717.55

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Solution

The fourth proportional to 79,219.80, 109,282.47 and 53,717.55 is: 74,102.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,219.80 : 109,282.47 = 53,717.55 : x
  2. Step 2: Convert to fraction form
    79,219.80/109,282.47 = 53,717.55/x
  3. Step 3: Cross multiply
    79,219.80x = 109,282.47 × 53,717.55
  4. Step 4: Simplify right side
    79,219.80x = 5,870,386,546.35
  5. Step 5: Solve for x
    x = 5,870,386,546.35/79,219.80
  6. Step 6: Final answer
    x = 74,102.52

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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.