Home / 51,379.50-77,070.86-13,939.46

Finding the Fourth Proportional to 51,379.50, 77,070.86 and 13,939.46

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Solution

The fourth proportional to 51,379.50, 77,070.86 and 13,939.46 is: 20,909.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,379.50 : 77,070.86 = 13,939.46 : x
  2. Step 2: Convert to fraction form
    51,379.50/77,070.86 = 13,939.46/x
  3. Step 3: Cross multiply
    51,379.50x = 77,070.86 × 13,939.46
  4. Step 4: Simplify right side
    51,379.50x = 1,074,326,170.14
  5. Step 5: Solve for x
    x = 1,074,326,170.14/51,379.50
  6. Step 6: Final answer
    x = 20,909.63

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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.