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Finding the Fourth Proportional to 84,967.92, 127,451.88 and 28,808.19

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Solution

The fourth proportional to 84,967.92, 127,451.88 and 28,808.19 is: 43,212.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,967.92 : 127,451.88 = 28,808.19 : x
  2. Step 2: Convert to fraction form
    84,967.92/127,451.88 = 28,808.19/x
  3. Step 3: Cross multiply
    84,967.92x = 127,451.88 × 28,808.19
  4. Step 4: Simplify right side
    84,967.92x = 3,671,657,974.90
  5. Step 5: Solve for x
    x = 3,671,657,974.90/84,967.92
  6. Step 6: Final answer
    x = 43,212.29

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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.