Home / 66,639.84-99,975.46-21,661.04

Finding the Fourth Proportional to 66,639.84, 99,975.46 and 21,661.04

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Solution

The fourth proportional to 66,639.84, 99,975.46 and 21,661.04 is: 32,496.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,639.84 : 99,975.46 = 21,661.04 : x
  2. Step 2: Convert to fraction form
    66,639.84/99,975.46 = 21,661.04/x
  3. Step 3: Cross multiply
    66,639.84x = 99,975.46 × 21,661.04
  4. Step 4: Simplify right side
    66,639.84x = 2,165,572,438.08
  5. Step 5: Solve for x
    x = 2,165,572,438.08/66,639.84
  6. Step 6: Final answer
    x = 32,496.66

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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.