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Finding the Fourth Proportional to 72,186.59, 108,279.92 and 38,922.32

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Solution

The fourth proportional to 72,186.59, 108,279.92 and 38,922.32 is: 58,383.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,186.59 : 108,279.92 = 38,922.32 : x
  2. Step 2: Convert to fraction form
    72,186.59/108,279.92 = 38,922.32/x
  3. Step 3: Cross multiply
    72,186.59x = 108,279.92 × 38,922.32
  4. Step 4: Simplify right side
    72,186.59x = 4,214,506,063.82
  5. Step 5: Solve for x
    x = 4,214,506,063.82/72,186.59
  6. Step 6: Final answer
    x = 58,383.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.