Home / 81,009.40-121,513.04-27,700.84

Finding the Fourth Proportional to 81,009.40, 121,513.04 and 27,700.84

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Solution

The fourth proportional to 81,009.40, 121,513.04 and 27,700.84 is: 41,550.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,009.40 : 121,513.04 = 27,700.84 : x
  2. Step 2: Convert to fraction form
    81,009.40/121,513.04 = 27,700.84/x
  3. Step 3: Cross multiply
    81,009.40x = 121,513.04 × 27,700.84
  4. Step 4: Simplify right side
    81,009.40x = 3,366,013,278.95
  5. Step 5: Solve for x
    x = 3,366,013,278.95/81,009.40
  6. Step 6: Final answer
    x = 41,550.90

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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.