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Finding the Fourth Proportional to 45,487.60, 68,101.80 and 40,303.60

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Solution

The fourth proportional to 45,487.60, 68,101.80 and 40,303.60 is: 60,340.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,487.60 : 68,101.80 = 40,303.60 : x
  2. Step 2: Convert to fraction form
    45,487.60/68,101.80 = 40,303.60/x
  3. Step 3: Cross multiply
    45,487.60x = 68,101.80 × 40,303.60
  4. Step 4: Simplify right side
    45,487.60x = 2,744,747,706.48
  5. Step 5: Solve for x
    x = 2,744,747,706.48/45,487.60
  6. Step 6: Final answer
    x = 60,340.57

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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.