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Finding the Fourth Proportional to 71,311.48, 98,410.62 and 39,480.92

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Solution

The fourth proportional to 71,311.48, 98,410.62 and 39,480.92 is: 54,484.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,311.48 : 98,410.62 = 39,480.92 : x
  2. Step 2: Convert to fraction form
    71,311.48/98,410.62 = 39,480.92/x
  3. Step 3: Cross multiply
    71,311.48x = 98,410.62 × 39,480.92
  4. Step 4: Simplify right side
    71,311.48x = 3,885,341,815.37
  5. Step 5: Solve for x
    x = 3,885,341,815.37/71,311.48
  6. Step 6: Final answer
    x = 54,484.10

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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.