Home / 84,721.56-127,045.42-28,551.20

Finding the Fourth Proportional to 84,721.56, 127,045.42 and 28,551.20

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Solution

The fourth proportional to 84,721.56, 127,045.42 and 28,551.20 is: 42,814.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,721.56 : 127,045.42 = 28,551.20 : x
  2. Step 2: Convert to fraction form
    84,721.56/127,045.42 = 28,551.20/x
  3. Step 3: Cross multiply
    84,721.56x = 127,045.42 × 28,551.20
  4. Step 4: Simplify right side
    84,721.56x = 3,627,299,195.50
  5. Step 5: Solve for x
    x = 3,627,299,195.50/84,721.56
  6. Step 6: Final answer
    x = 42,814.36

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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.