Home / 87,803.07-121,168.45-47,517.13

Finding the Fourth Proportional to 87,803.07, 121,168.45 and 47,517.13

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Solution

The fourth proportional to 87,803.07, 121,168.45 and 47,517.13 is: 65,573.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,803.07 : 121,168.45 = 47,517.13 : x
  2. Step 2: Convert to fraction form
    87,803.07/121,168.45 = 47,517.13/x
  3. Step 3: Cross multiply
    87,803.07x = 121,168.45 × 47,517.13
  4. Step 4: Simplify right side
    87,803.07x = 5,757,576,503.50
  5. Step 5: Solve for x
    x = 5,757,576,503.50/87,803.07
  6. Step 6: Final answer
    x = 65,573.75

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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.