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Finding the Fourth Proportional to 45,117.80, 67,676.70 and 18,823.40

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Solution

The fourth proportional to 45,117.80, 67,676.70 and 18,823.40 is: 28,235.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,117.80 : 67,676.70 = 18,823.40 : x
  2. Step 2: Convert to fraction form
    45,117.80/67,676.70 = 18,823.40/x
  3. Step 3: Cross multiply
    45,117.80x = 67,676.70 × 18,823.40
  4. Step 4: Simplify right side
    45,117.80x = 1,273,905,594.78
  5. Step 5: Solve for x
    x = 1,273,905,594.78/45,117.80
  6. Step 6: Final answer
    x = 28,235.10

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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.