Home / 90,847.77-136,277.42-28,520.73

Finding the Fourth Proportional to 90,847.77, 136,277.42 and 28,520.73

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Solution

The fourth proportional to 90,847.77, 136,277.42 and 28,520.73 is: 42,782.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,847.77 : 136,277.42 = 28,520.73 : x
  2. Step 2: Convert to fraction form
    90,847.77/136,277.42 = 28,520.73/x
  3. Step 3: Cross multiply
    90,847.77x = 136,277.42 × 28,520.73
  4. Step 4: Simplify right side
    90,847.77x = 3,886,731,358.31
  5. Step 5: Solve for x
    x = 3,886,731,358.31/90,847.77
  6. Step 6: Final answer
    x = 42,782.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.