Home / 87,477.16-131,214.87-40,078.80

Finding the Fourth Proportional to 87,477.16, 131,214.87 and 40,078.80

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Solution

The fourth proportional to 87,477.16, 131,214.87 and 40,078.80 is: 60,117.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,477.16 : 131,214.87 = 40,078.80 : x
  2. Step 2: Convert to fraction form
    87,477.16/131,214.87 = 40,078.80/x
  3. Step 3: Cross multiply
    87,477.16x = 131,214.87 × 40,078.80
  4. Step 4: Simplify right side
    87,477.16x = 5,258,934,531.76
  5. Step 5: Solve for x
    x = 5,258,934,531.76/87,477.16
  6. Step 6: Final answer
    x = 60,117.80

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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.