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Finding the Fourth Proportional to 64,478.40, 88,974.24 and 36,178.88

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Solution

The fourth proportional to 64,478.40, 88,974.24 and 36,178.88 is: 49,923.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,478.40 : 88,974.24 = 36,178.88 : x
  2. Step 2: Convert to fraction form
    64,478.40/88,974.24 = 36,178.88/x
  3. Step 3: Cross multiply
    64,478.40x = 88,974.24 × 36,178.88
  4. Step 4: Simplify right side
    64,478.40x = 3,218,988,352.05
  5. Step 5: Solve for x
    x = 3,218,988,352.05/64,478.40
  6. Step 6: Final answer
    x = 49,923.51

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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.