Home / 51,439.20-77,162.16-19,864.32

Finding the Fourth Proportional to 51,439.20, 77,162.16 and 19,864.32

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Solution

The fourth proportional to 51,439.20, 77,162.16 and 19,864.32 is: 29,797.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,439.20 : 77,162.16 = 19,864.32 : x
  2. Step 2: Convert to fraction form
    51,439.20/77,162.16 = 19,864.32/x
  3. Step 3: Cross multiply
    51,439.20x = 77,162.16 × 19,864.32
  4. Step 4: Simplify right side
    51,439.20x = 1,532,773,838.13
  5. Step 5: Solve for x
    x = 1,532,773,838.13/51,439.20
  6. Step 6: Final answer
    x = 29,797.78

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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.