Home / 87,808,340-121,175,509.20-49,177,172

Finding the Fourth Proportional to 87,808,340, 121,175,509.20 and 49,177,172

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Solution

The fourth proportional to 87,808,340, 121,175,509.20 and 49,177,172 is: 67,864,497.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,808,340 : 121,175,509.20 = 49,177,172 : x
  2. Step 2: Convert to fraction form
    87,808,340/121,175,509.20 = 49,177,172/x
  3. Step 3: Cross multiply
    87,808,340x = 121,175,509.20 × 49,177,172
  4. Step 4: Simplify right side
    87,808,340x = 5,959,068,858,115,983
  5. Step 5: Solve for x
    x = 5,959,068,858,115,983/87,808,340
  6. Step 6: Final answer
    x = 67,864,497.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.