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Finding the Fourth Proportional to 60,885.10, 91,327.82 and 18,763.82

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Solution

The fourth proportional to 60,885.10, 91,327.82 and 18,763.82 is: 28,145.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,885.10 : 91,327.82 = 18,763.82 : x
  2. Step 2: Convert to fraction form
    60,885.10/91,327.82 = 18,763.82/x
  3. Step 3: Cross multiply
    60,885.10x = 91,327.82 × 18,763.82
  4. Step 4: Simplify right side
    60,885.10x = 1,713,658,681.65
  5. Step 5: Solve for x
    x = 1,713,658,681.65/60,885.10
  6. Step 6: Final answer
    x = 28,145.78

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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.