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Finding the Fourth Proportional to 60,195.97, 90,210.91 and 45,388.61

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Solution

The fourth proportional to 60,195.97, 90,210.91 and 45,388.61 is: 68,020.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,195.97 : 90,210.91 = 45,388.61 : x
  2. Step 2: Convert to fraction form
    60,195.97/90,210.91 = 45,388.61/x
  3. Step 3: Cross multiply
    60,195.97x = 90,210.91 × 45,388.61
  4. Step 4: Simplify right side
    60,195.97x = 4,094,547,811.74
  5. Step 5: Solve for x
    x = 4,094,547,811.74/60,195.97
  6. Step 6: Final answer
    x = 68,020.30

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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.