Home / 70,920.49-106,381.07-21,001.53

Finding the Fourth Proportional to 70,920.49, 106,381.07 and 21,001.53

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Solution

The fourth proportional to 70,920.49, 106,381.07 and 21,001.53 is: 31,502.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,920.49 : 106,381.07 = 21,001.53 : x
  2. Step 2: Convert to fraction form
    70,920.49/106,381.07 = 21,001.53/x
  3. Step 3: Cross multiply
    70,920.49x = 106,381.07 × 21,001.53
  4. Step 4: Simplify right side
    70,920.49x = 2,234,165,233.04
  5. Step 5: Solve for x
    x = 2,234,165,233.04/70,920.49
  6. Step 6: Final answer
    x = 31,502.39

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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.