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Finding the Fourth Proportional to 84,654.30, 126,842.03 and 65,887.11

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Solution

The fourth proportional to 84,654.30, 126,842.03 and 65,887.11 is: 98,722.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,654.30 : 126,842.03 = 65,887.11 : x
  2. Step 2: Convert to fraction form
    84,654.30/126,842.03 = 65,887.11/x
  3. Step 3: Cross multiply
    84,654.30x = 126,842.03 × 65,887.11
  4. Step 4: Simplify right side
    84,654.30x = 8,357,254,783.23
  5. Step 5: Solve for x
    x = 8,357,254,783.23/84,654.30
  6. Step 6: Final answer
    x = 98,722.15

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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.