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Finding the Fourth Proportional to 63,409.65, 87,306.15 and 53,829.68

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Solution

The fourth proportional to 63,409.65, 87,306.15 and 53,829.68 is: 74,115.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,409.65 : 87,306.15 = 53,829.68 : x
  2. Step 2: Convert to fraction form
    63,409.65/87,306.15 = 53,829.68/x
  3. Step 3: Cross multiply
    63,409.65x = 87,306.15 × 53,829.68
  4. Step 4: Simplify right side
    63,409.65x = 4,699,662,334.80
  5. Step 5: Solve for x
    x = 4,699,662,334.80/63,409.65
  6. Step 6: Final answer
    x = 74,115.89

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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.