Home / 87,885.40-121,289.32-49,651.96

Finding the Fourth Proportional to 87,885.40, 121,289.32 and 49,651.96

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Solution

The fourth proportional to 87,885.40, 121,289.32 and 49,651.96 is: 68,523.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,885.40 : 121,289.32 = 49,651.96 : x
  2. Step 2: Convert to fraction form
    87,885.40/121,289.32 = 49,651.96/x
  3. Step 3: Cross multiply
    87,885.40x = 121,289.32 × 49,651.96
  4. Step 4: Simplify right side
    87,885.40x = 6,022,252,465.07
  5. Step 5: Solve for x
    x = 6,022,252,465.07/87,885.40
  6. Step 6: Final answer
    x = 68,523.92

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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.