Home / 54,543.85-81,789.76-19,000.80

Finding the Fourth Proportional to 54,543.85, 81,789.76 and 19,000.80

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Solution

The fourth proportional to 54,543.85, 81,789.76 and 19,000.80 is: 28,492.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,543.85 : 81,789.76 = 19,000.80 : x
  2. Step 2: Convert to fraction form
    54,543.85/81,789.76 = 19,000.80/x
  3. Step 3: Cross multiply
    54,543.85x = 81,789.76 × 19,000.80
  4. Step 4: Simplify right side
    54,543.85x = 1,554,070,462.86
  5. Step 5: Solve for x
    x = 1,554,070,462.86/54,543.85
  6. Step 6: Final answer
    x = 28,492.13

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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.