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Finding the Fourth Proportional to 61,174.49, 84,432.32 and 39,916.85

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Solution

The fourth proportional to 61,174.49, 84,432.32 and 39,916.85 is: 55,092.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,174.49 : 84,432.32 = 39,916.85 : x
  2. Step 2: Convert to fraction form
    61,174.49/84,432.32 = 39,916.85/x
  3. Step 3: Cross multiply
    61,174.49x = 84,432.32 × 39,916.85
  4. Step 4: Simplify right side
    61,174.49x = 3,370,271,630.85
  5. Step 5: Solve for x
    x = 3,370,271,630.85/61,174.49
  6. Step 6: Final answer
    x = 55,092.77

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1.5x scale

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.