Home / 52,781.76-72,839.52-28,909.44

Finding the Fourth Proportional to 52,781.76, 72,839.52 and 28,909.44

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Solution

The fourth proportional to 52,781.76, 72,839.52 and 28,909.44 is: 39,895.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,781.76 : 72,839.52 = 28,909.44 : x
  2. Step 2: Convert to fraction form
    52,781.76/72,839.52 = 28,909.44/x
  3. Step 3: Cross multiply
    52,781.76x = 72,839.52 × 28,909.44
  4. Step 4: Simplify right side
    52,781.76x = 2,105,749,733.07
  5. Step 5: Solve for x
    x = 2,105,749,733.07/52,781.76
  6. Step 6: Final answer
    x = 39,895.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.