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Finding the Fourth Proportional to 85,449.48, 128,174.22 and 62,223.72

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Solution

The fourth proportional to 85,449.48, 128,174.22 and 62,223.72 is: 93,335.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,449.48 : 128,174.22 = 62,223.72 : x
  2. Step 2: Convert to fraction form
    85,449.48/128,174.22 = 62,223.72/x
  3. Step 3: Cross multiply
    85,449.48x = 128,174.22 × 62,223.72
  4. Step 4: Simplify right side
    85,449.48x = 7,975,476,776.50
  5. Step 5: Solve for x
    x = 7,975,476,776.50/85,449.48
  6. Step 6: Final answer
    x = 93,335.58

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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.