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Finding the Fourth Proportional to 68,612.60, 103,005.30 and 37,047.80

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Solution

The fourth proportional to 68,612.60, 103,005.30 and 37,047.80 is: 55,618.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,612.60 : 103,005.30 = 37,047.80 : x
  2. Step 2: Convert to fraction form
    68,612.60/103,005.30 = 37,047.80/x
  3. Step 3: Cross multiply
    68,612.60x = 103,005.30 × 37,047.80
  4. Step 4: Simplify right side
    68,612.60x = 3,816,119,753.34
  5. Step 5: Solve for x
    x = 3,816,119,753.34/68,612.60
  6. Step 6: Final answer
    x = 55,618.35

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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.