Home / 87,918.87-121,327.86-47,633.72

Finding the Fourth Proportional to 87,918.87, 121,327.86 and 47,633.72

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Solution

The fourth proportional to 87,918.87, 121,327.86 and 47,633.72 is: 65,734.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,918.87 : 121,327.86 = 47,633.72 : x
  2. Step 2: Convert to fraction form
    87,918.87/121,327.86 = 47,633.72/x
  3. Step 3: Cross multiply
    87,918.87x = 121,327.86 × 47,633.72
  4. Step 4: Simplify right side
    87,918.87x = 5,779,296,704.80
  5. Step 5: Solve for x
    x = 5,779,296,704.80/87,918.87
  6. Step 6: Final answer
    x = 65,734.43

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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.