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Finding the Fourth Proportional to 83,608.39, 115,424.36 and 64,446.22

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Solution

The fourth proportional to 83,608.39, 115,424.36 and 64,446.22 is: 88,970.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,608.39 : 115,424.36 = 64,446.22 : x
  2. Step 2: Convert to fraction form
    83,608.39/115,424.36 = 64,446.22/x
  3. Step 3: Cross multiply
    83,608.39x = 115,424.36 × 64,446.22
  4. Step 4: Simplify right side
    83,608.39x = 7,438,663,697.92
  5. Step 5: Solve for x
    x = 7,438,663,697.92/83,608.39
  6. Step 6: Final answer
    x = 88,970.30

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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.