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Finding the Fourth Proportional to 45,296.66, 67,931.32 and 18,995.56

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Solution

The fourth proportional to 45,296.66, 67,931.32 and 18,995.56 is: 28,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,296.66 : 67,931.32 = 18,995.56 : x
  2. Step 2: Convert to fraction form
    45,296.66/67,931.32 = 18,995.56/x
  3. Step 3: Cross multiply
    45,296.66x = 67,931.32 × 18,995.56
  4. Step 4: Simplify right side
    45,296.66x = 1,290,393,247.62
  5. Step 5: Solve for x
    x = 1,290,393,247.62/45,296.66
  6. Step 6: Final answer
    x = 28,487.60

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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.