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Finding the Fourth Proportional to 67,412.35, 101,118.53 and 42,480.55

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Solution

The fourth proportional to 67,412.35, 101,118.53 and 42,480.55 is: 63,720.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,412.35 : 101,118.53 = 42,480.55 : x
  2. Step 2: Convert to fraction form
    67,412.35/101,118.53 = 42,480.55/x
  3. Step 3: Cross multiply
    67,412.35x = 101,118.53 × 42,480.55
  4. Step 4: Simplify right side
    67,412.35x = 4,295,570,557.19
  5. Step 5: Solve for x
    x = 4,295,570,557.19/67,412.35
  6. Step 6: Final answer
    x = 63,720.83

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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.