Home / 67,319.15-100,988.46-20,565.95

Finding the Fourth Proportional to 67,319.15, 100,988.46 and 20,565.95

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Solution

The fourth proportional to 67,319.15, 100,988.46 and 20,565.95 is: 30,851.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,319.15 : 100,988.46 = 20,565.95 : x
  2. Step 2: Convert to fraction form
    67,319.15/100,988.46 = 20,565.95/x
  3. Step 3: Cross multiply
    67,319.15x = 100,988.46 × 20,565.95
  4. Step 4: Simplify right side
    67,319.15x = 2,076,923,113.99
  5. Step 5: Solve for x
    x = 2,076,923,113.99/67,319.15
  6. Step 6: Final answer
    x = 30,851.89

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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.