Home / 90,906.48-125,442-50,618.70

Finding the Fourth Proportional to 90,906.48, 125,442 and 50,618.70

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Solution

The fourth proportional to 90,906.48, 125,442 and 50,618.70 is: 69,848.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,906.48 : 125,442 = 50,618.70 : x
  2. Step 2: Convert to fraction form
    90,906.48/125,442 = 50,618.70/x
  3. Step 3: Cross multiply
    90,906.48x = 125,442 × 50,618.70
  4. Step 4: Simplify right side
    90,906.48x = 6,349,710,965.40
  5. Step 5: Solve for x
    x = 6,349,710,965.40/90,906.48
  6. Step 6: Final answer
    x = 69,848.83

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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.