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Finding the Fourth Proportional to 53,296.35, 79,915.14 and 21,698.31

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Solution

The fourth proportional to 53,296.35, 79,915.14 and 21,698.31 is: 32,535.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,296.35 : 79,915.14 = 21,698.31 : x
  2. Step 2: Convert to fraction form
    53,296.35/79,915.14 = 21,698.31/x
  3. Step 3: Cross multiply
    53,296.35x = 79,915.14 × 21,698.31
  4. Step 4: Simplify right side
    53,296.35x = 1,734,023,781.10
  5. Step 5: Solve for x
    x = 1,734,023,781.10/53,296.35
  6. Step 6: Final answer
    x = 32,535.51

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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.