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Finding the Fourth Proportional to 64,010.40, 88,344.72 and 38,872.80

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Solution

The fourth proportional to 64,010.40, 88,344.72 and 38,872.80 is: 53,650.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,010.40 : 88,344.72 = 38,872.80 : x
  2. Step 2: Convert to fraction form
    64,010.40/88,344.72 = 38,872.80/x
  3. Step 3: Cross multiply
    64,010.40x = 88,344.72 × 38,872.80
  4. Step 4: Simplify right side
    64,010.40x = 3,434,206,631.62
  5. Step 5: Solve for x
    x = 3,434,206,631.62/64,010.40
  6. Step 6: Final answer
    x = 53,650.76

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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.