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Finding the Fourth Proportional to 90,808.88, 125,317.40 and 49,977.70

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Solution

The fourth proportional to 90,808.88, 125,317.40 and 49,977.70 is: 68,969.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,808.88 : 125,317.40 = 49,977.70 : x
  2. Step 2: Convert to fraction form
    90,808.88/125,317.40 = 49,977.70/x
  3. Step 3: Cross multiply
    90,808.88x = 125,317.40 × 49,977.70
  4. Step 4: Simplify right side
    90,808.88x = 6,263,074,858.80
  5. Step 5: Solve for x
    x = 6,263,074,858.80/90,808.88
  6. Step 6: Final answer
    x = 68,969.85

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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.