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Finding the Fourth Proportional to 61,280.57, 91,878.01 and 31,304.09

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Solution

The fourth proportional to 61,280.57, 91,878.01 and 31,304.09 is: 46,934.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,280.57 : 91,878.01 = 31,304.09 : x
  2. Step 2: Convert to fraction form
    61,280.57/91,878.01 = 31,304.09/x
  3. Step 3: Cross multiply
    61,280.57x = 91,878.01 × 31,304.09
  4. Step 4: Simplify right side
    61,280.57x = 2,876,157,304.77
  5. Step 5: Solve for x
    x = 2,876,157,304.77/61,280.57
  6. Step 6: Final answer
    x = 46,934.25

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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.