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Finding the Fourth Proportional to 66,581.95, 99,873.19 and 16,661.90

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Solution

The fourth proportional to 66,581.95, 99,873.19 and 16,661.90 is: 24,992.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,581.95 : 99,873.19 = 16,661.90 : x
  2. Step 2: Convert to fraction form
    66,581.95/99,873.19 = 16,661.90/x
  3. Step 3: Cross multiply
    66,581.95x = 99,873.19 × 16,661.90
  4. Step 4: Simplify right side
    66,581.95x = 1,664,077,281.25
  5. Step 5: Solve for x
    x = 1,664,077,281.25/66,581.95
  6. Step 6: Final answer
    x = 24,992.92

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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.