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Finding the Fourth Proportional to 66,443.81, 99,702.17 and 26,990.33

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Solution

The fourth proportional to 66,443.81, 99,702.17 and 26,990.33 is: 40,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,443.81 : 99,702.17 = 26,990.33 : x
  2. Step 2: Convert to fraction form
    66,443.81/99,702.17 = 26,990.33/x
  3. Step 3: Cross multiply
    66,443.81x = 99,702.17 × 26,990.33
  4. Step 4: Simplify right side
    66,443.81x = 2,690,994,470.02
  5. Step 5: Solve for x
    x = 2,690,994,470.02/66,443.81
  6. Step 6: Final answer
    x = 40,500.30

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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.