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Finding the Fourth Proportional to 63,420.22, 87,521.88 and 35,128.54

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Solution

The fourth proportional to 63,420.22, 87,521.88 and 35,128.54 is: 48,478.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,420.22 : 87,521.88 = 35,128.54 : x
  2. Step 2: Convert to fraction form
    63,420.22/87,521.88 = 35,128.54/x
  3. Step 3: Cross multiply
    63,420.22x = 87,521.88 × 35,128.54
  4. Step 4: Simplify right side
    63,420.22x = 3,074,515,862.46
  5. Step 5: Solve for x
    x = 3,074,515,862.46/63,420.22
  6. Step 6: Final answer
    x = 48,478.48

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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.