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Finding the Fourth Proportional to 61,285.68, 84,576.96 and 36,135.72

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Solution

The fourth proportional to 61,285.68, 84,576.96 and 36,135.72 is: 49,868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,285.68 : 84,576.96 = 36,135.72 : x
  2. Step 2: Convert to fraction form
    61,285.68/84,576.96 = 36,135.72/x
  3. Step 3: Cross multiply
    61,285.68x = 84,576.96 × 36,135.72
  4. Step 4: Simplify right side
    61,285.68x = 3,056,249,345.01
  5. Step 5: Solve for x
    x = 3,056,249,345.01/61,285.68
  6. Step 6: Final answer
    x = 49,868.90

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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.