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Finding the Fourth Proportional to 71,658.92, 98,628.30 and 63,105.04

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Solution

The fourth proportional to 71,658.92, 98,628.30 and 63,105.04 is: 86,855.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,658.92 : 98,628.30 = 63,105.04 : x
  2. Step 2: Convert to fraction form
    71,658.92/98,628.30 = 63,105.04/x
  3. Step 3: Cross multiply
    71,658.92x = 98,628.30 × 63,105.04
  4. Step 4: Simplify right side
    71,658.92x = 6,223,942,816.63
  5. Step 5: Solve for x
    x = 6,223,942,816.63/71,658.92
  6. Step 6: Final answer
    x = 86,855.10

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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.