Home / 86,273.64-129,416.04-27,111.78

Finding the Fourth Proportional to 86,273.64, 129,416.04 and 27,111.78

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Solution

The fourth proportional to 86,273.64, 129,416.04 and 27,111.78 is: 40,669.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,273.64 : 129,416.04 = 27,111.78 : x
  2. Step 2: Convert to fraction form
    86,273.64/129,416.04 = 27,111.78/x
  3. Step 3: Cross multiply
    86,273.64x = 129,416.04 × 27,111.78
  4. Step 4: Simplify right side
    86,273.64x = 3,508,699,204.95
  5. Step 5: Solve for x
    x = 3,508,699,204.95/86,273.64
  6. Step 6: Final answer
    x = 40,669.42

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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.