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Finding the Fourth Proportional to 86,365.80, 129,548.70 and 27,207.45

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Solution

The fourth proportional to 86,365.80, 129,548.70 and 27,207.45 is: 40,811.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,365.80 : 129,548.70 = 27,207.45 : x
  2. Step 2: Convert to fraction form
    86,365.80/129,548.70 = 27,207.45/x
  3. Step 3: Cross multiply
    86,365.80x = 129,548.70 × 27,207.45
  4. Step 4: Simplify right side
    86,365.80x = 3,524,689,777.82
  5. Step 5: Solve for x
    x = 3,524,689,777.82/86,365.80
  6. Step 6: Final answer
    x = 40,811.18

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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.