Home / 99,725.43-149,587-28,649.81

Finding the Fourth Proportional to 99,725.43, 149,587 and 28,649.81

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Solution

The fourth proportional to 99,725.43, 149,587 and 28,649.81 is: 42,974.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,725.43 : 149,587 = 28,649.81 : x
  2. Step 2: Convert to fraction form
    99,725.43/149,587 = 28,649.81/x
  3. Step 3: Cross multiply
    99,725.43x = 149,587 × 28,649.81
  4. Step 4: Simplify right side
    99,725.43x = 4,285,639,128.47
  5. Step 5: Solve for x
    x = 4,285,639,128.47/99,725.43
  6. Step 6: Final answer
    x = 42,974.39

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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.