Home / 56,287.25-84,430.85-21,218.70

Finding the Fourth Proportional to 56,287.25, 84,430.85 and 21,218.70

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Solution

The fourth proportional to 56,287.25, 84,430.85 and 21,218.70 is: 31,828.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,287.25 : 84,430.85 = 21,218.70 : x
  2. Step 2: Convert to fraction form
    56,287.25/84,430.85 = 21,218.70/x
  3. Step 3: Cross multiply
    56,287.25x = 84,430.85 × 21,218.70
  4. Step 4: Simplify right side
    56,287.25x = 1,791,512,876.90
  5. Step 5: Solve for x
    x = 1,791,512,876.90/56,287.25
  6. Step 6: Final answer
    x = 31,828.04

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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.