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Finding the Fourth Proportional to 68,471.20, 102,706.80 and 44,970.40

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Solution

The fourth proportional to 68,471.20, 102,706.80 and 44,970.40 is: 67,455.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,471.20 : 102,706.80 = 44,970.40 : x
  2. Step 2: Convert to fraction form
    68,471.20/102,706.80 = 44,970.40/x
  3. Step 3: Cross multiply
    68,471.20x = 102,706.80 × 44,970.40
  4. Step 4: Simplify right side
    68,471.20x = 4,618,765,878.72
  5. Step 5: Solve for x
    x = 4,618,765,878.72/68,471.20
  6. Step 6: Final answer
    x = 67,455.60

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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.