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Finding the Fourth Proportional to 45,281.84, 67,916.16 and 12,003.92

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Solution

The fourth proportional to 45,281.84, 67,916.16 and 12,003.92 is: 18,004.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,281.84 : 67,916.16 = 12,003.92 : x
  2. Step 2: Convert to fraction form
    45,281.84/67,916.16 = 12,003.92/x
  3. Step 3: Cross multiply
    45,281.84x = 67,916.16 × 12,003.92
  4. Step 4: Simplify right side
    45,281.84x = 815,260,151.35
  5. Step 5: Solve for x
    x = 815,260,151.35/45,281.84
  6. Step 6: Final answer
    x = 18,004.13

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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.