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Finding the Fourth Proportional to 71,173.92, 98,218.95 and 39,342.12

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Solution

The fourth proportional to 71,173.92, 98,218.95 and 39,342.12 is: 54,291.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,173.92 : 98,218.95 = 39,342.12 : x
  2. Step 2: Convert to fraction form
    71,173.92/98,218.95 = 39,342.12/x
  3. Step 3: Cross multiply
    71,173.92x = 98,218.95 × 39,342.12
  4. Step 4: Simplify right side
    71,173.92x = 3,864,141,717.17
  5. Step 5: Solve for x
    x = 3,864,141,717.17/71,173.92
  6. Step 6: Final answer
    x = 54,291.54

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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.