Home / 51,793.28-77,678.69-18,515.66

Finding the Fourth Proportional to 51,793.28, 77,678.69 and 18,515.66

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Solution

The fourth proportional to 51,793.28, 77,678.69 and 18,515.66 is: 27,769.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,793.28 : 77,678.69 = 18,515.66 : x
  2. Step 2: Convert to fraction form
    51,793.28/77,678.69 = 18,515.66/x
  3. Step 3: Cross multiply
    51,793.28x = 77,678.69 × 18,515.66
  4. Step 4: Simplify right side
    51,793.28x = 1,438,272,120.71
  5. Step 5: Solve for x
    x = 1,438,272,120.71/51,793.28
  6. Step 6: Final answer
    x = 27,769.47

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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.