Home / 87,786.25-121,144.16-47,499.13

Finding the Fourth Proportional to 87,786.25, 121,144.16 and 47,499.13

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Solution

The fourth proportional to 87,786.25, 121,144.16 and 47,499.13 is: 65,548.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,786.25 : 121,144.16 = 47,499.13 : x
  2. Step 2: Convert to fraction form
    87,786.25/121,144.16 = 47,499.13/x
  3. Step 3: Cross multiply
    87,786.25x = 121,144.16 × 47,499.13
  4. Step 4: Simplify right side
    87,786.25x = 5,754,241,361.36
  5. Step 5: Solve for x
    x = 5,754,241,361.36/87,786.25
  6. Step 6: Final answer
    x = 65,548.32

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1.5x scale

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.