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Finding the Fourth Proportional to 115,582.83, 159,481.76 and 65,272.11

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Solution

The fourth proportional to 115,582.83, 159,481.76 and 65,272.11 is: 90,062.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,582.83 : 159,481.76 = 65,272.11 : x
  2. Step 2: Convert to fraction form
    115,582.83/159,481.76 = 65,272.11/x
  3. Step 3: Cross multiply
    115,582.83x = 159,481.76 × 65,272.11
  4. Step 4: Simplify right side
    115,582.83x = 10,409,710,655.35
  5. Step 5: Solve for x
    x = 10,409,710,655.35/115,582.83
  6. Step 6: Final answer
    x = 90,062.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.