Home / 67,212.20-92,747.40-38,919.68

Finding the Fourth Proportional to 67,212.20, 92,747.40 and 38,919.68

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Solution

The fourth proportional to 67,212.20, 92,747.40 and 38,919.68 is: 53,706.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,212.20 : 92,747.40 = 38,919.68 : x
  2. Step 2: Convert to fraction form
    67,212.20/92,747.40 = 38,919.68/x
  3. Step 3: Cross multiply
    67,212.20x = 92,747.40 × 38,919.68
  4. Step 4: Simplify right side
    67,212.20x = 3,609,699,128.83
  5. Step 5: Solve for x
    x = 3,609,699,128.83/67,212.20
  6. Step 6: Final answer
    x = 53,706.01

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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.