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Finding the Fourth Proportional to 53,128, 79,706.04 and 26,481.84

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Solution

The fourth proportional to 53,128, 79,706.04 and 26,481.84 is: 39,729.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,128 : 79,706.04 = 26,481.84 : x
  2. Step 2: Convert to fraction form
    53,128/79,706.04 = 26,481.84/x
  3. Step 3: Cross multiply
    53,128x = 79,706.04 × 26,481.84
  4. Step 4: Simplify right side
    53,128x = 2,110,762,598.31
  5. Step 5: Solve for x
    x = 2,110,762,598.31/53,128
  6. Step 6: Final answer
    x = 39,729.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.