Home / 90,157.12-124,415.76-49,867.72

Finding the Fourth Proportional to 90,157.12, 124,415.76 and 49,867.72

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Solution

The fourth proportional to 90,157.12, 124,415.76 and 49,867.72 is: 68,816.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,157.12 : 124,415.76 = 49,867.72 : x
  2. Step 2: Convert to fraction form
    90,157.12/124,415.76 = 49,867.72/x
  3. Step 3: Cross multiply
    90,157.12x = 124,415.76 × 49,867.72
  4. Step 4: Simplify right side
    90,157.12x = 6,204,330,283.27
  5. Step 5: Solve for x
    x = 6,204,330,283.27/90,157.12
  6. Step 6: Final answer
    x = 68,816.86

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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.