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Finding the Fourth Proportional to 99,891.95, 137,848.68 and 54,568.76

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Solution

The fourth proportional to 99,891.95, 137,848.68 and 54,568.76 is: 75,303.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,891.95 : 137,848.68 = 54,568.76 : x
  2. Step 2: Convert to fraction form
    99,891.95/137,848.68 = 54,568.76/x
  3. Step 3: Cross multiply
    99,891.95x = 137,848.68 × 54,568.76
  4. Step 4: Simplify right side
    99,891.95x = 7,522,230,845.99
  5. Step 5: Solve for x
    x = 7,522,230,845.99/99,891.95
  6. Step 6: Final answer
    x = 75,303.68

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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.