Home / 87,738.42-121,080-47,452.98

Finding the Fourth Proportional to 87,738.42, 121,080 and 47,452.98

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Solution

The fourth proportional to 87,738.42, 121,080 and 47,452.98 is: 65,485.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,738.42 : 121,080 = 47,452.98 : x
  2. Step 2: Convert to fraction form
    87,738.42/121,080 = 47,452.98/x
  3. Step 3: Cross multiply
    87,738.42x = 121,080 × 47,452.98
  4. Step 4: Simplify right side
    87,738.42x = 5,745,606,818.40
  5. Step 5: Solve for x
    x = 5,745,606,818.40/87,738.42
  6. Step 6: Final answer
    x = 65,485.64

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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.