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Finding the Fourth Proportional to 63,422.78, 87,564.39 and 39,559.10

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Solution

The fourth proportional to 63,422.78, 87,564.39 and 39,559.10 is: 54,617.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,422.78 : 87,564.39 = 39,559.10 : x
  2. Step 2: Convert to fraction form
    63,422.78/87,564.39 = 39,559.10/x
  3. Step 3: Cross multiply
    63,422.78x = 87,564.39 × 39,559.10
  4. Step 4: Simplify right side
    63,422.78x = 3,463,968,460.45
  5. Step 5: Solve for x
    x = 3,463,968,460.45/63,422.78
  6. Step 6: Final answer
    x = 54,617.10

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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.