Home / 83,457.52-125,186.82-21,128.02

Finding the Fourth Proportional to 83,457.52, 125,186.82 and 21,128.02

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Solution

The fourth proportional to 83,457.52, 125,186.82 and 21,128.02 is: 31,692.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,457.52 : 125,186.82 = 21,128.02 : x
  2. Step 2: Convert to fraction form
    83,457.52/125,186.82 = 21,128.02/x
  3. Step 3: Cross multiply
    83,457.52x = 125,186.82 × 21,128.02
  4. Step 4: Simplify right side
    83,457.52x = 2,644,949,636.70
  5. Step 5: Solve for x
    x = 2,644,949,636.70/83,457.52
  6. Step 6: Final answer
    x = 31,692.17

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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.