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Finding the Fourth Proportional to 40,312.40, 60,439.80 and 18,107.60

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Solution

The fourth proportional to 40,312.40, 60,439.80 and 18,107.60 is: 27,148.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,312.40 : 60,439.80 = 18,107.60 : x
  2. Step 2: Convert to fraction form
    40,312.40/60,439.80 = 18,107.60/x
  3. Step 3: Cross multiply
    40,312.40x = 60,439.80 × 18,107.60
  4. Step 4: Simplify right side
    40,312.40x = 1,094,419,722.48
  5. Step 5: Solve for x
    x = 1,094,419,722.48/40,312.40
  6. Step 6: Final answer
    x = 27,148.46

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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.