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Finding the Fourth Proportional to 81,101.95, 121,652.92 and 41,637.13

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Solution

The fourth proportional to 81,101.95, 121,652.92 and 41,637.13 is: 62,455.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,101.95 : 121,652.92 = 41,637.13 : x
  2. Step 2: Convert to fraction form
    81,101.95/121,652.92 = 41,637.13/x
  3. Step 3: Cross multiply
    81,101.95x = 121,652.92 × 41,637.13
  4. Step 4: Simplify right side
    81,101.95x = 5,065,277,628.47
  5. Step 5: Solve for x
    x = 5,065,277,628.47/81,101.95
  6. Step 6: Final answer
    x = 62,455.69

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1.5x scale

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.