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Finding the Fourth Proportional to 60,072.62, 90,113.74 and 18,519.50

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Solution

The fourth proportional to 60,072.62, 90,113.74 and 18,519.50 is: 27,780.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,072.62 : 90,113.74 = 18,519.50 : x
  2. Step 2: Convert to fraction form
    60,072.62/90,113.74 = 18,519.50/x
  3. Step 3: Cross multiply
    60,072.62x = 90,113.74 × 18,519.50
  4. Step 4: Simplify right side
    60,072.62x = 1,668,861,407.93
  5. Step 5: Solve for x
    x = 1,668,861,407.93/60,072.62
  6. Step 6: Final answer
    x = 27,780.73

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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.