Home / 51,613.20-77,006.70-45,999.90

Finding the Fourth Proportional to 51,613.20, 77,006.70 and 45,999.90

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Solution

The fourth proportional to 51,613.20, 77,006.70 and 45,999.90 is: 68,631.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,613.20 : 77,006.70 = 45,999.90 : x
  2. Step 2: Convert to fraction form
    51,613.20/77,006.70 = 45,999.90/x
  3. Step 3: Cross multiply
    51,613.20x = 77,006.70 × 45,999.90
  4. Step 4: Simplify right side
    51,613.20x = 3,542,300,499.33
  5. Step 5: Solve for x
    x = 3,542,300,499.33/51,613.20
  6. Step 6: Final answer
    x = 68,631.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.