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Finding the Fourth Proportional to 53,575.52, 80,357.64 and 21,988.92

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Solution

The fourth proportional to 53,575.52, 80,357.64 and 21,988.92 is: 32,981.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,575.52 : 80,357.64 = 21,988.92 : x
  2. Step 2: Convert to fraction form
    53,575.52/80,357.64 = 21,988.92/x
  3. Step 3: Cross multiply
    53,575.52x = 80,357.64 × 21,988.92
  4. Step 4: Simplify right side
    53,575.52x = 1,766,977,258.21
  5. Step 5: Solve for x
    x = 1,766,977,258.21/53,575.52
  6. Step 6: Final answer
    x = 32,981.06

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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.