Home / 87,835.78-121,212.66-47,548.72

Finding the Fourth Proportional to 87,835.78, 121,212.66 and 47,548.72

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Solution

The fourth proportional to 87,835.78, 121,212.66 and 47,548.72 is: 65,616.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,835.78 : 121,212.66 = 47,548.72 : x
  2. Step 2: Convert to fraction form
    87,835.78/121,212.66 = 47,548.72/x
  3. Step 3: Cross multiply
    87,835.78x = 121,212.66 × 47,548.72
  4. Step 4: Simplify right side
    87,835.78x = 5,763,506,830.80
  5. Step 5: Solve for x
    x = 5,763,506,830.80/87,835.78
  6. Step 6: Final answer
    x = 65,616.85

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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.