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Finding the Fourth Proportional to 61,137.70, 85,651.10 and 61,137.70

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Solution

The fourth proportional to 61,137.70, 85,651.10 and 61,137.70 is: 85,651.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,137.70 : 85,651.10 = 61,137.70 : x
  2. Step 2: Convert to fraction form
    61,137.70/85,651.10 = 61,137.70/x
  3. Step 3: Cross multiply
    61,137.70x = 85,651.10 × 61,137.70
  4. Step 4: Simplify right side
    61,137.70x = 5,236,511,256.47
  5. Step 5: Solve for x
    x = 5,236,511,256.47/61,137.70
  6. Step 6: Final answer
    x = 85,651.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.