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Finding the Fourth Proportional to 68,445.72, 94,455.24 and 38,637.72

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Solution

The fourth proportional to 68,445.72, 94,455.24 and 38,637.72 is: 53,320.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,445.72 : 94,455.24 = 38,637.72 : x
  2. Step 2: Convert to fraction form
    68,445.72/94,455.24 = 38,637.72/x
  3. Step 3: Cross multiply
    68,445.72x = 94,455.24 × 38,637.72
  4. Step 4: Simplify right side
    68,445.72x = 3,649,535,115.65
  5. Step 5: Solve for x
    x = 3,649,535,115.65/68,445.72
  6. Step 6: Final answer
    x = 53,320.14

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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.