Home / 99,623.52-149,434.81-42,689.09

Finding the Fourth Proportional to 99,623.52, 149,434.81 and 42,689.09

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Solution

The fourth proportional to 99,623.52, 149,434.81 and 42,689.09 is: 64,033.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,623.52 : 149,434.81 = 42,689.09 : x
  2. Step 2: Convert to fraction form
    99,623.52/149,434.81 = 42,689.09/x
  3. Step 3: Cross multiply
    99,623.52x = 149,434.81 × 42,689.09
  4. Step 4: Simplify right side
    99,623.52x = 6,379,236,320.09
  5. Step 5: Solve for x
    x = 6,379,236,320.09/99,623.52
  6. Step 6: Final answer
    x = 64,033.44

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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.