Home / 51,288.80-76,856.40-43,455.20

Finding the Fourth Proportional to 51,288.80, 76,856.40 and 43,455.20

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Solution

The fourth proportional to 51,288.80, 76,856.40 and 43,455.20 is: 65,117.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,288.80 : 76,856.40 = 43,455.20 : x
  2. Step 2: Convert to fraction form
    51,288.80/76,856.40 = 43,455.20/x
  3. Step 3: Cross multiply
    51,288.80x = 76,856.40 × 43,455.20
  4. Step 4: Simplify right side
    51,288.80x = 3,339,810,233.28
  5. Step 5: Solve for x
    x = 3,339,810,233.28/51,288.80
  6. Step 6: Final answer
    x = 65,117.73

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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.