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Finding the Fourth Proportional to 90,216.98, 124,497.71 and 49,930.76

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Solution

The fourth proportional to 90,216.98, 124,497.71 and 49,930.76 is: 68,903.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,216.98 : 124,497.71 = 49,930.76 : x
  2. Step 2: Convert to fraction form
    90,216.98/124,497.71 = 49,930.76/x
  3. Step 3: Cross multiply
    90,216.98x = 124,497.71 × 49,930.76
  4. Step 4: Simplify right side
    90,216.98x = 6,216,265,278.56
  5. Step 5: Solve for x
    x = 6,216,265,278.56/90,216.98
  6. Step 6: Final answer
    x = 68,903.50

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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.