Home / 87,756.08-121,103.48-47,469.72

Finding the Fourth Proportional to 87,756.08, 121,103.48 and 47,469.72

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Solution

The fourth proportional to 87,756.08, 121,103.48 and 47,469.72 is: 65,508.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,756.08 : 121,103.48 = 47,469.72 : x
  2. Step 2: Convert to fraction form
    87,756.08/121,103.48 = 47,469.72/x
  3. Step 3: Cross multiply
    87,756.08x = 121,103.48 × 47,469.72
  4. Step 4: Simplify right side
    87,756.08x = 5,748,748,286.63
  5. Step 5: Solve for x
    x = 5,748,748,286.63/87,756.08
  6. Step 6: Final answer
    x = 65,508.26

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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.