Home / 71,531.24-98,719.32-39,706.28

Finding the Fourth Proportional to 71,531.24, 98,719.32 and 39,706.28

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Solution

The fourth proportional to 71,531.24, 98,719.32 and 39,706.28 is: 54,798.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,531.24 : 98,719.32 = 39,706.28 : x
  2. Step 2: Convert to fraction form
    71,531.24/98,719.32 = 39,706.28/x
  3. Step 3: Cross multiply
    71,531.24x = 98,719.32 × 39,706.28
  4. Step 4: Simplify right side
    71,531.24x = 3,919,776,961.33
  5. Step 5: Solve for x
    x = 3,919,776,961.33/71,531.24
  6. Step 6: Final answer
    x = 54,798.11

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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.