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Finding the Fourth Proportional to 71,085.93, 98,098.79 and 38,820.86

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Solution

The fourth proportional to 71,085.93, 98,098.79 and 38,820.86 is: 53,572.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,085.93 : 98,098.79 = 38,820.86 : x
  2. Step 2: Convert to fraction form
    71,085.93/98,098.79 = 38,820.86/x
  3. Step 3: Cross multiply
    71,085.93x = 98,098.79 × 38,820.86
  4. Step 4: Simplify right side
    71,085.93x = 3,808,279,392.76
  5. Step 5: Solve for x
    x = 3,808,279,392.76/71,085.93
  6. Step 6: Final answer
    x = 53,572.90

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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.