Home / 88,728.03-122,236.56-61,821.72

Finding the Fourth Proportional to 88,728.03, 122,236.56 and 61,821.72

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Solution

The fourth proportional to 88,728.03, 122,236.56 and 61,821.72 is: 85,168.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,728.03 : 122,236.56 = 61,821.72 : x
  2. Step 2: Convert to fraction form
    88,728.03/122,236.56 = 61,821.72/x
  3. Step 3: Cross multiply
    88,728.03x = 122,236.56 × 61,821.72
  4. Step 4: Simplify right side
    88,728.03x = 7,556,874,386.08
  5. Step 5: Solve for x
    x = 7,556,874,386.08/88,728.03
  6. Step 6: Final answer
    x = 85,168.96

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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.