Home / 87,867,989.88-121,257,823.41-48,709,667.40

Finding the Fourth Proportional to 87,867,989.88, 121,257,823.41 and 48,709,667.40

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Solution

The fourth proportional to 87,867,989.88, 121,257,823.41 and 48,709,667.40 is: 67,219,339.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,867,989.88 : 121,257,823.41 = 48,709,667.40 : x
  2. Step 2: Convert to fraction form
    87,867,989.88/121,257,823.41 = 48,709,667.40/x
  3. Step 3: Cross multiply
    87,867,989.88x = 121,257,823.41 × 48,709,667.40
  4. Step 4: Simplify right side
    87,867,989.88x = 5,906,428,247,949,033
  5. Step 5: Solve for x
    x = 5,906,428,247,949,033/87,867,989.88
  6. Step 6: Final answer
    x = 67,219,339.56

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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.