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Finding the Fourth Proportional to 45,679.88, 68,502.76 and 15,685.61

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Solution

The fourth proportional to 45,679.88, 68,502.76 and 15,685.61 is: 23,522.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,679.88 : 68,502.76 = 15,685.61 : x
  2. Step 2: Convert to fraction form
    45,679.88/68,502.76 = 15,685.61/x
  3. Step 3: Cross multiply
    45,679.88x = 68,502.76 × 15,685.61
  4. Step 4: Simplify right side
    45,679.88x = 1,074,507,195.56
  5. Step 5: Solve for x
    x = 1,074,507,195.56/45,679.88
  6. Step 6: Final answer
    x = 23,522.55

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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.