Home / 66,302.31-99,432.27-21,920.79

Finding the Fourth Proportional to 66,302.31, 99,432.27 and 21,920.79

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Solution

The fourth proportional to 66,302.31, 99,432.27 and 21,920.79 is: 32,874.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,302.31 : 99,432.27 = 21,920.79 : x
  2. Step 2: Convert to fraction form
    66,302.31/99,432.27 = 21,920.79/x
  3. Step 3: Cross multiply
    66,302.31x = 99,432.27 × 21,920.79
  4. Step 4: Simplify right side
    66,302.31x = 2,179,633,909.89
  5. Step 5: Solve for x
    x = 2,179,633,909.89/66,302.31
  6. Step 6: Final answer
    x = 32,874.18

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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.