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Finding the Fourth Proportional to 63,820.40, 88,048.35 and 63,721.98

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Solution

The fourth proportional to 63,820.40, 88,048.35 and 63,721.98 is: 87,912.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,820.40 : 88,048.35 = 63,721.98 : x
  2. Step 2: Convert to fraction form
    63,820.40/88,048.35 = 63,721.98/x
  3. Step 3: Cross multiply
    63,820.40x = 88,048.35 × 63,721.98
  4. Step 4: Simplify right side
    63,820.40x = 5,610,615,197.73
  5. Step 5: Solve for x
    x = 5,610,615,197.73/63,820.40
  6. Step 6: Final answer
    x = 87,912.57

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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.