Home / 90,140.89-124,383.64-49,849.18

Finding the Fourth Proportional to 90,140.89, 124,383.64 and 49,849.18

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Solution

The fourth proportional to 90,140.89, 124,383.64 and 49,849.18 is: 68,785.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,140.89 : 124,383.64 = 49,849.18 : x
  2. Step 2: Convert to fraction form
    90,140.89/124,383.64 = 49,849.18/x
  3. Step 3: Cross multiply
    90,140.89x = 124,383.64 × 49,849.18
  4. Step 4: Simplify right side
    90,140.89x = 6,200,422,459.42
  5. Step 5: Solve for x
    x = 6,200,422,459.42/90,140.89
  6. Step 6: Final answer
    x = 68,785.90

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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.