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Finding the Fourth Proportional to 61,977, 85,753.44 and 54,035.76

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Solution

The fourth proportional to 61,977, 85,753.44 and 54,035.76 is: 74,765.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,977 : 85,753.44 = 54,035.76 : x
  2. Step 2: Convert to fraction form
    61,977/85,753.44 = 54,035.76/x
  3. Step 3: Cross multiply
    61,977x = 85,753.44 × 54,035.76
  4. Step 4: Simplify right side
    61,977x = 4,633,752,303.01
  5. Step 5: Solve for x
    x = 4,633,752,303.01/61,977
  6. Step 6: Final answer
    x = 74,765.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.