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Finding the Fourth Proportional to 45,248.95, 67,899.89 and 18,951.49

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Solution

The fourth proportional to 45,248.95, 67,899.89 and 18,951.49 is: 28,438.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,248.95 : 67,899.89 = 18,951.49 : x
  2. Step 2: Convert to fraction form
    45,248.95/67,899.89 = 18,951.49/x
  3. Step 3: Cross multiply
    45,248.95x = 67,899.89 × 18,951.49
  4. Step 4: Simplify right side
    45,248.95x = 1,286,804,086.34
  5. Step 5: Solve for x
    x = 1,286,804,086.34/45,248.95
  6. Step 6: Final answer
    x = 28,438.32

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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.