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Finding the Fourth Proportional to 86,292.60, 129,438.80 and 27,133.44

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Solution

The fourth proportional to 86,292.60, 129,438.80 and 27,133.44 is: 40,700.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,292.60 : 129,438.80 = 27,133.44 : x
  2. Step 2: Convert to fraction form
    86,292.60/129,438.80 = 27,133.44/x
  3. Step 3: Cross multiply
    86,292.60x = 129,438.80 × 27,133.44
  4. Step 4: Simplify right side
    86,292.60x = 3,512,119,913.47
  5. Step 5: Solve for x
    x = 3,512,119,913.47/86,292.60
  6. Step 6: Final answer
    x = 40,700.13

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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.