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Finding the Fourth Proportional to 68,648.50, 94,747.19 and 49,840.30

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Solution

The fourth proportional to 68,648.50, 94,747.19 and 49,840.30 is: 68,788.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,648.50 : 94,747.19 = 49,840.30 : x
  2. Step 2: Convert to fraction form
    68,648.50/94,747.19 = 49,840.30/x
  3. Step 3: Cross multiply
    68,648.50x = 94,747.19 × 49,840.30
  4. Step 4: Simplify right side
    68,648.50x = 4,722,228,373.76
  5. Step 5: Solve for x
    x = 4,722,228,373.76/68,648.50
  6. Step 6: Final answer
    x = 68,788.52

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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.