Home / 66,963.08-100,443.69-20,215.95

Finding the Fourth Proportional to 66,963.08, 100,443.69 and 20,215.95

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Solution

The fourth proportional to 66,963.08, 100,443.69 and 20,215.95 is: 30,323.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,963.08 : 100,443.69 = 20,215.95 : x
  2. Step 2: Convert to fraction form
    66,963.08/100,443.69 = 20,215.95/x
  3. Step 3: Cross multiply
    66,963.08x = 100,443.69 × 20,215.95
  4. Step 4: Simplify right side
    66,963.08x = 2,030,564,614.86
  5. Step 5: Solve for x
    x = 2,030,564,614.86/66,963.08
  6. Step 6: Final answer
    x = 30,323.65

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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.