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Finding the Fourth Proportional to 66,462.75, 99,706.70 and 21,496.18

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Solution

The fourth proportional to 66,462.75, 99,706.70 and 21,496.18 is: 32,248.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,462.75 : 99,706.70 = 21,496.18 : x
  2. Step 2: Convert to fraction form
    66,462.75/99,706.70 = 21,496.18/x
  3. Step 3: Cross multiply
    66,462.75x = 99,706.70 × 21,496.18
  4. Step 4: Simplify right side
    66,462.75x = 2,143,313,170.41
  5. Step 5: Solve for x
    x = 2,143,313,170.41/66,462.75
  6. Step 6: Final answer
    x = 32,248.34

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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.