Home / 45,985.28-68,956.08-21,017.92

Finding the Fourth Proportional to 45,985.28, 68,956.08 and 21,017.92

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Solution

The fourth proportional to 45,985.28, 68,956.08 and 21,017.92 is: 31,516.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,985.28 : 68,956.08 = 21,017.92 : x
  2. Step 2: Convert to fraction form
    45,985.28/68,956.08 = 21,017.92/x
  3. Step 3: Cross multiply
    45,985.28x = 68,956.08 × 21,017.92
  4. Step 4: Simplify right side
    45,985.28x = 1,449,313,372.95
  5. Step 5: Solve for x
    x = 1,449,313,372.95/45,985.28
  6. Step 6: Final answer
    x = 31,516.90

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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.