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Finding the Fourth Proportional to 71,652.06, 98,879.13 and 39,820.41

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Solution

The fourth proportional to 71,652.06, 98,879.13 and 39,820.41 is: 54,951.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,652.06 : 98,879.13 = 39,820.41 : x
  2. Step 2: Convert to fraction form
    71,652.06/98,879.13 = 39,820.41/x
  3. Step 3: Cross multiply
    71,652.06x = 98,879.13 × 39,820.41
  4. Step 4: Simplify right side
    71,652.06x = 3,937,407,497.04
  5. Step 5: Solve for x
    x = 3,937,407,497.04/71,652.06
  6. Step 6: Final answer
    x = 54,951.77

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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.