Home / 87,934.45-121,349.64-47,648.20

Finding the Fourth Proportional to 87,934.45, 121,349.64 and 47,648.20

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Solution

The fourth proportional to 87,934.45, 121,349.64 and 47,648.20 is: 65,754.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,934.45 : 121,349.64 = 47,648.20 : x
  2. Step 2: Convert to fraction form
    87,934.45/121,349.64 = 47,648.20/x
  3. Step 3: Cross multiply
    87,934.45x = 121,349.64 × 47,648.20
  4. Step 4: Simplify right side
    87,934.45x = 5,782,092,019.49
  5. Step 5: Solve for x
    x = 5,782,092,019.49/87,934.45
  6. Step 6: Final answer
    x = 65,754.57

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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.