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Finding the Fourth Proportional to 99,873.60, 149,807.52 and 40,694.64

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Solution

The fourth proportional to 99,873.60, 149,807.52 and 40,694.64 is: 61,040.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,873.60 : 149,807.52 = 40,694.64 : x
  2. Step 2: Convert to fraction form
    99,873.60/149,807.52 = 40,694.64/x
  3. Step 3: Cross multiply
    99,873.60x = 149,807.52 × 40,694.64
  4. Step 4: Simplify right side
    99,873.60x = 6,096,363,095.69
  5. Step 5: Solve for x
    x = 6,096,363,095.69/99,873.60
  6. Step 6: Final answer
    x = 61,040.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.