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Finding the Fourth Proportional to 45,061.59, 67,608.45 and 20,099.40

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Solution

The fourth proportional to 45,061.59, 67,608.45 and 20,099.40 is: 30,156.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,061.59 : 67,608.45 = 20,099.40 : x
  2. Step 2: Convert to fraction form
    45,061.59/67,608.45 = 20,099.40/x
  3. Step 3: Cross multiply
    45,061.59x = 67,608.45 × 20,099.40
  4. Step 4: Simplify right side
    45,061.59x = 1,358,889,279.93
  5. Step 5: Solve for x
    x = 1,358,889,279.93/45,061.59
  6. Step 6: Final answer
    x = 30,156.27

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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.