Home / 87,922.90-121,333.44-47,637.70

Finding the Fourth Proportional to 87,922.90, 121,333.44 and 47,637.70

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Solution

The fourth proportional to 87,922.90, 121,333.44 and 47,637.70 is: 65,739.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,922.90 : 121,333.44 = 47,637.70 : x
  2. Step 2: Convert to fraction form
    87,922.90/121,333.44 = 47,637.70/x
  3. Step 3: Cross multiply
    87,922.90x = 121,333.44 × 47,637.70
  4. Step 4: Simplify right side
    87,922.90x = 5,780,046,014.69
  5. Step 5: Solve for x
    x = 5,780,046,014.69/87,922.90
  6. Step 6: Final answer
    x = 65,739.94

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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.