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Finding the Fourth Proportional to 85,436.91, 117,894.15 and 49,634.46

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Solution

The fourth proportional to 85,436.91, 117,894.15 and 49,634.46 is: 68,490.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,436.91 : 117,894.15 = 49,634.46 : x
  2. Step 2: Convert to fraction form
    85,436.91/117,894.15 = 49,634.46/x
  3. Step 3: Cross multiply
    85,436.91x = 117,894.15 × 49,634.46
  4. Step 4: Simplify right side
    85,436.91x = 5,851,612,472.41
  5. Step 5: Solve for x
    x = 5,851,612,472.41/85,436.91
  6. Step 6: Final answer
    x = 68,490.45

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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.