Home / 73,010.20-109,515.30-66,443.80

Finding the Fourth Proportional to 73,010.20, 109,515.30 and 66,443.80

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Solution

The fourth proportional to 73,010.20, 109,515.30 and 66,443.80 is: 99,665.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,010.20 : 109,515.30 = 66,443.80 : x
  2. Step 2: Convert to fraction form
    73,010.20/109,515.30 = 66,443.80/x
  3. Step 3: Cross multiply
    73,010.20x = 109,515.30 × 66,443.80
  4. Step 4: Simplify right side
    73,010.20x = 7,276,612,690.14
  5. Step 5: Solve for x
    x = 7,276,612,690.14/73,010.20
  6. Step 6: Final answer
    x = 99,665.70

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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.