Home / 70,972.11-106,439.98-21,040.53

Finding the Fourth Proportional to 70,972.11, 106,439.98 and 21,040.53

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Solution

The fourth proportional to 70,972.11, 106,439.98 and 21,040.53 is: 31,555.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,972.11 : 106,439.98 = 21,040.53 : x
  2. Step 2: Convert to fraction form
    70,972.11/106,439.98 = 21,040.53/x
  3. Step 3: Cross multiply
    70,972.11x = 106,439.98 × 21,040.53
  4. Step 4: Simplify right side
    70,972.11x = 2,239,553,592.39
  5. Step 5: Solve for x
    x = 2,239,553,592.39/70,972.11
  6. Step 6: Final answer
    x = 31,555.40

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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.