Home / 66,282.57-99,439.42-21,909.32

Finding the Fourth Proportional to 66,282.57, 99,439.42 and 21,909.32

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Solution

The fourth proportional to 66,282.57, 99,439.42 and 21,909.32 is: 32,869.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,282.57 : 99,439.42 = 21,909.32 : x
  2. Step 2: Convert to fraction form
    66,282.57/99,439.42 = 21,909.32/x
  3. Step 3: Cross multiply
    66,282.57x = 99,439.42 × 21,909.32
  4. Step 4: Simplify right side
    66,282.57x = 2,178,650,390.46
  5. Step 5: Solve for x
    x = 2,178,650,390.46/66,282.57
  6. Step 6: Final answer
    x = 32,869.13

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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.