Home / 66,081.18-99,122.67-21,711.36

Finding the Fourth Proportional to 66,081.18, 99,122.67 and 21,711.36

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Solution

The fourth proportional to 66,081.18, 99,122.67 and 21,711.36 is: 32,567.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,081.18 : 99,122.67 = 21,711.36 : x
  2. Step 2: Convert to fraction form
    66,081.18/99,122.67 = 21,711.36/x
  3. Step 3: Cross multiply
    66,081.18x = 99,122.67 × 21,711.36
  4. Step 4: Simplify right side
    66,081.18x = 2,152,087,972.53
  5. Step 5: Solve for x
    x = 2,152,087,972.53/66,081.18
  6. Step 6: Final answer
    x = 32,567.34

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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.