Home / 67,313.85-100,988.95-20,565.45

Finding the Fourth Proportional to 67,313.85, 100,988.95 and 20,565.45

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Solution

The fourth proportional to 67,313.85, 100,988.95 and 20,565.45 is: 30,853.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,313.85 : 100,988.95 = 20,565.45 : x
  2. Step 2: Convert to fraction form
    67,313.85/100,988.95 = 20,565.45/x
  3. Step 3: Cross multiply
    67,313.85x = 100,988.95 × 20,565.45
  4. Step 4: Simplify right side
    67,313.85x = 2,076,882,975.01
  5. Step 5: Solve for x
    x = 2,076,882,975.01/67,313.85
  6. Step 6: Final answer
    x = 30,853.73

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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.