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Finding the Fourth Proportional to 71,362.38, 98,480.16 and 39,530.61

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Solution

The fourth proportional to 71,362.38, 98,480.16 and 39,530.61 is: 54,552.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,362.38 : 98,480.16 = 39,530.61 : x
  2. Step 2: Convert to fraction form
    71,362.38/98,480.16 = 39,530.61/x
  3. Step 3: Cross multiply
    71,362.38x = 98,480.16 × 39,530.61
  4. Step 4: Simplify right side
    71,362.38x = 3,892,980,797.70
  5. Step 5: Solve for x
    x = 3,892,980,797.70/71,362.38
  6. Step 6: Final answer
    x = 54,552.28

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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.