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Finding the Fourth Proportional to 64,379.49, 88,810.67 and 38,871.78

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Solution

The fourth proportional to 64,379.49, 88,810.67 and 38,871.78 is: 53,623.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,379.49 : 88,810.67 = 38,871.78 : x
  2. Step 2: Convert to fraction form
    64,379.49/88,810.67 = 38,871.78/x
  3. Step 3: Cross multiply
    64,379.49x = 88,810.67 × 38,871.78
  4. Step 4: Simplify right side
    64,379.49x = 3,452,228,825.89
  5. Step 5: Solve for x
    x = 3,452,228,825.89/64,379.49
  6. Step 6: Final answer
    x = 53,623.12

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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.