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Finding the Fourth Proportional to 86,188.48, 129,282.73 and 27,028.91

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Solution

The fourth proportional to 86,188.48, 129,282.73 and 27,028.91 is: 40,543.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,188.48 : 129,282.73 = 27,028.91 : x
  2. Step 2: Convert to fraction form
    86,188.48/129,282.73 = 27,028.91/x
  3. Step 3: Cross multiply
    86,188.48x = 129,282.73 × 27,028.91
  4. Step 4: Simplify right side
    86,188.48x = 3,494,371,529.36
  5. Step 5: Solve for x
    x = 3,494,371,529.36/86,188.48
  6. Step 6: Final answer
    x = 40,543.37

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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.