Home / 71,243.12-98,318.40-39,411.47

Finding the Fourth Proportional to 71,243.12, 98,318.40 and 39,411.47

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Solution

The fourth proportional to 71,243.12, 98,318.40 and 39,411.47 is: 54,389.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,243.12 : 98,318.40 = 39,411.47 : x
  2. Step 2: Convert to fraction form
    71,243.12/98,318.40 = 39,411.47/x
  3. Step 3: Cross multiply
    71,243.12x = 98,318.40 × 39,411.47
  4. Step 4: Simplify right side
    71,243.12x = 3,874,872,672.05
  5. Step 5: Solve for x
    x = 3,874,872,672.05/71,243.12
  6. Step 6: Final answer
    x = 54,389.43

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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.