Home / 71,678.76-98,909.58-39,844.56

Finding the Fourth Proportional to 71,678.76, 98,909.58 and 39,844.56

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Solution

The fourth proportional to 71,678.76, 98,909.58 and 39,844.56 is: 54,981.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,678.76 : 98,909.58 = 39,844.56 : x
  2. Step 2: Convert to fraction form
    71,678.76/98,909.58 = 39,844.56/x
  3. Step 3: Cross multiply
    71,678.76x = 98,909.58 × 39,844.56
  4. Step 4: Simplify right side
    71,678.76x = 3,941,008,694.88
  5. Step 5: Solve for x
    x = 3,941,008,694.88/71,678.76
  6. Step 6: Final answer
    x = 54,981.54

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Double scale
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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.