Home / 84,876.96-127,329.21-28,720.52

Finding the Fourth Proportional to 84,876.96, 127,329.21 and 28,720.52

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Solution

The fourth proportional to 84,876.96, 127,329.21 and 28,720.52 is: 43,085.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,876.96 : 127,329.21 = 28,720.52 : x
  2. Step 2: Convert to fraction form
    84,876.96/127,329.21 = 28,720.52/x
  3. Step 3: Cross multiply
    84,876.96x = 127,329.21 × 28,720.52
  4. Step 4: Simplify right side
    84,876.96x = 3,656,961,122.39
  5. Step 5: Solve for x
    x = 3,656,961,122.39/84,876.96
  6. Step 6: Final answer
    x = 43,085.44

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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.