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Finding the Fourth Proportional to 68,447.20, 102,670.80 and 48,618.40

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Solution

The fourth proportional to 68,447.20, 102,670.80 and 48,618.40 is: 72,927.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,447.20 : 102,670.80 = 48,618.40 : x
  2. Step 2: Convert to fraction form
    68,447.20/102,670.80 = 48,618.40/x
  3. Step 3: Cross multiply
    68,447.20x = 102,670.80 × 48,618.40
  4. Step 4: Simplify right side
    68,447.20x = 4,991,690,022.72
  5. Step 5: Solve for x
    x = 4,991,690,022.72/68,447.20
  6. Step 6: Final answer
    x = 72,927.60

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1.5x scale

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.