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Finding the Fourth Proportional to 71,448.74, 98,599.84 and 39,618.17

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Solution

The fourth proportional to 71,448.74, 98,599.84 and 39,618.17 is: 54,673.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,448.74 : 98,599.84 = 39,618.17 : x
  2. Step 2: Convert to fraction form
    71,448.74/98,599.84 = 39,618.17/x
  3. Step 3: Cross multiply
    71,448.74x = 98,599.84 × 39,618.17
  4. Step 4: Simplify right side
    71,448.74x = 3,906,344,631.05
  5. Step 5: Solve for x
    x = 3,906,344,631.05/71,448.74
  6. Step 6: Final answer
    x = 54,673.39

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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.