Home / 66,966.62-92,407.20-40,108.42

Finding the Fourth Proportional to 66,966.62, 92,407.20 and 40,108.42

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Solution

The fourth proportional to 66,966.62, 92,407.20 and 40,108.42 is: 55,345.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,966.62 : 92,407.20 = 40,108.42 : x
  2. Step 2: Convert to fraction form
    66,966.62/92,407.20 = 40,108.42/x
  3. Step 3: Cross multiply
    66,966.62x = 92,407.20 × 40,108.42
  4. Step 4: Simplify right side
    66,966.62x = 3,706,306,788.62
  5. Step 5: Solve for x
    x = 3,706,306,788.62/66,966.62
  6. Step 6: Final answer
    x = 55,345.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.