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Finding the Fourth Proportional to 90,557.87, 124,977.74 and 50,279.40

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Solution

The fourth proportional to 90,557.87, 124,977.74 and 50,279.40 is: 69,389.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,557.87 : 124,977.74 = 50,279.40 : x
  2. Step 2: Convert to fraction form
    90,557.87/124,977.74 = 50,279.40/x
  3. Step 3: Cross multiply
    90,557.87x = 124,977.74 × 50,279.40
  4. Step 4: Simplify right side
    90,557.87x = 6,283,805,529.16
  5. Step 5: Solve for x
    x = 6,283,805,529.16/90,557.87
  6. Step 6: Final answer
    x = 69,389.95

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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.