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Finding the Fourth Proportional to 63,028.18, 86,978.91 and 34,347.87

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Solution

The fourth proportional to 63,028.18, 86,978.91 and 34,347.87 is: 47,400.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,028.18 : 86,978.91 = 34,347.87 : x
  2. Step 2: Convert to fraction form
    63,028.18/86,978.91 = 34,347.87/x
  3. Step 3: Cross multiply
    63,028.18x = 86,978.91 × 34,347.87
  4. Step 4: Simplify right side
    63,028.18x = 2,987,540,293.42
  5. Step 5: Solve for x
    x = 2,987,540,293.42/63,028.18
  6. Step 6: Final answer
    x = 47,400.07

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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.