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Finding the Fourth Proportional to 63,469.81, 87,478.68 and 55,352.89

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Solution

The fourth proportional to 63,469.81, 87,478.68 and 55,352.89 is: 76,291.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,469.81 : 87,478.68 = 55,352.89 : x
  2. Step 2: Convert to fraction form
    63,469.81/87,478.68 = 55,352.89/x
  3. Step 3: Cross multiply
    63,469.81x = 87,478.68 × 55,352.89
  4. Step 4: Simplify right side
    63,469.81x = 4,842,197,751.39
  5. Step 5: Solve for x
    x = 4,842,197,751.39/63,469.81
  6. Step 6: Final answer
    x = 76,291.35

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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.