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Finding the Fourth Proportional to 61,498, 92,221.56 and 21,508.60

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Solution

The fourth proportional to 61,498, 92,221.56 and 21,508.60 is: 32,254.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,498 : 92,221.56 = 21,508.60 : x
  2. Step 2: Convert to fraction form
    61,498/92,221.56 = 21,508.60/x
  3. Step 3: Cross multiply
    61,498x = 92,221.56 × 21,508.60
  4. Step 4: Simplify right side
    61,498x = 1,983,556,645.42
  5. Step 5: Solve for x
    x = 1,983,556,645.42/61,498
  6. Step 6: Final answer
    x = 32,254.00

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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.