Home / 86,981.12-130,479.65-27,009.94

Finding the Fourth Proportional to 86,981.12, 130,479.65 and 27,009.94

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Solution

The fourth proportional to 86,981.12, 130,479.65 and 27,009.94 is: 40,517.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,981.12 : 130,479.65 = 27,009.94 : x
  2. Step 2: Convert to fraction form
    86,981.12/130,479.65 = 27,009.94/x
  3. Step 3: Cross multiply
    86,981.12x = 130,479.65 × 27,009.94
  4. Step 4: Simplify right side
    86,981.12x = 3,524,247,259.05
  5. Step 5: Solve for x
    x = 3,524,247,259.05/86,981.12
  6. Step 6: Final answer
    x = 40,517.38

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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.