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Finding the Fourth Proportional to 86,351.36, 129,526.86 and 27,192.20

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Solution

The fourth proportional to 86,351.36, 129,526.86 and 27,192.20 is: 40,788.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,351.36 : 129,526.86 = 27,192.20 : x
  2. Step 2: Convert to fraction form
    86,351.36/129,526.86 = 27,192.20/x
  3. Step 3: Cross multiply
    86,351.36x = 129,526.86 × 27,192.20
  4. Step 4: Simplify right side
    86,351.36x = 3,522,120,282.49
  5. Step 5: Solve for x
    x = 3,522,120,282.49/86,351.36
  6. Step 6: Final answer
    x = 40,788.24

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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.