Home / 90,028.64-124,228.72-49,739.92

Finding the Fourth Proportional to 90,028.64, 124,228.72 and 49,739.92

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Solution

The fourth proportional to 90,028.64, 124,228.72 and 49,739.92 is: 68,635.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,028.64 : 124,228.72 = 49,739.92 : x
  2. Step 2: Convert to fraction form
    90,028.64/124,228.72 = 49,739.92/x
  3. Step 3: Cross multiply
    90,028.64x = 124,228.72 × 49,739.92
  4. Step 4: Simplify right side
    90,028.64x = 6,179,126,594.50
  5. Step 5: Solve for x
    x = 6,179,126,594.50/90,028.64
  6. Step 6: Final answer
    x = 68,635.12

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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.