Home / 77,190.30-115,785.45-30,437.10

Finding the Fourth Proportional to 77,190.30, 115,785.45 and 30,437.10

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Solution

The fourth proportional to 77,190.30, 115,785.45 and 30,437.10 is: 45,655.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,190.30 : 115,785.45 = 30,437.10 : x
  2. Step 2: Convert to fraction form
    77,190.30/115,785.45 = 30,437.10/x
  3. Step 3: Cross multiply
    77,190.30x = 115,785.45 × 30,437.10
  4. Step 4: Simplify right side
    77,190.30x = 3,524,173,320.20
  5. Step 5: Solve for x
    x = 3,524,173,320.20/77,190.30
  6. Step 6: Final answer
    x = 45,655.65

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Similar ratio
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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.