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Finding the Fourth Proportional to 67,438.80, 101,174.49 and 25,319.34

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Solution

The fourth proportional to 67,438.80, 101,174.49 and 25,319.34 is: 37,985.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,438.80 : 101,174.49 = 25,319.34 : x
  2. Step 2: Convert to fraction form
    67,438.80/101,174.49 = 25,319.34/x
  3. Step 3: Cross multiply
    67,438.80x = 101,174.49 × 25,319.34
  4. Step 4: Simplify right side
    67,438.80x = 2,561,671,311.64
  5. Step 5: Solve for x
    x = 2,561,671,311.64/67,438.80
  6. Step 6: Final answer
    x = 37,985.13

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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.