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Finding the Fourth Proportional to 43,497.78, 65,147.64 and 25,931.31

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Solution

The fourth proportional to 43,497.78, 65,147.64 and 25,931.31 is: 38,837.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,497.78 : 65,147.64 = 25,931.31 : x
  2. Step 2: Convert to fraction form
    43,497.78/65,147.64 = 25,931.31/x
  3. Step 3: Cross multiply
    43,497.78x = 65,147.64 × 25,931.31
  4. Step 4: Simplify right side
    43,497.78x = 1,689,363,648.61
  5. Step 5: Solve for x
    x = 1,689,363,648.61/43,497.78
  6. Step 6: Final answer
    x = 38,837.93

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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.