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Finding the Fourth Proportional to 60,492, 90,738 and 18,940.08

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Solution

The fourth proportional to 60,492, 90,738 and 18,940.08 is: 28,410.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,492 : 90,738 = 18,940.08 : x
  2. Step 2: Convert to fraction form
    60,492/90,738 = 18,940.08/x
  3. Step 3: Cross multiply
    60,492x = 90,738 × 18,940.08
  4. Step 4: Simplify right side
    60,492x = 1,718,584,979.04
  5. Step 5: Solve for x
    x = 1,718,584,979.04/60,492
  6. Step 6: Final answer
    x = 28,410.12

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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.