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Finding the Fourth Proportional to 86,417.96, 129,629.74 and 27,254.20

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Solution

The fourth proportional to 86,417.96, 129,629.74 and 27,254.20 is: 40,882.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,417.96 : 129,629.74 = 27,254.20 : x
  2. Step 2: Convert to fraction form
    86,417.96/129,629.74 = 27,254.20/x
  3. Step 3: Cross multiply
    86,417.96x = 129,629.74 × 27,254.20
  4. Step 4: Simplify right side
    86,417.96x = 3,532,954,859.91
  5. Step 5: Solve for x
    x = 3,532,954,859.91/86,417.96
  6. Step 6: Final answer
    x = 40,882.18

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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.