Home / 82,031.70-123,047.55-68,909.70

Finding the Fourth Proportional to 82,031.70, 123,047.55 and 68,909.70

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Solution

The fourth proportional to 82,031.70, 123,047.55 and 68,909.70 is: 103,364.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,031.70 : 123,047.55 = 68,909.70 : x
  2. Step 2: Convert to fraction form
    82,031.70/123,047.55 = 68,909.70/x
  3. Step 3: Cross multiply
    82,031.70x = 123,047.55 × 68,909.70
  4. Step 4: Simplify right side
    82,031.70x = 8,479,169,756.24
  5. Step 5: Solve for x
    x = 8,479,169,756.24/82,031.70
  6. Step 6: Final answer
    x = 103,364.55

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1.5x scale

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.