Home / 99,905.69-149,761.13-39,916.28

Finding the Fourth Proportional to 99,905.69, 149,761.13 and 39,916.28

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Solution

The fourth proportional to 99,905.69, 149,761.13 and 39,916.28 is: 59,835.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,905.69 : 149,761.13 = 39,916.28 : x
  2. Step 2: Convert to fraction form
    99,905.69/149,761.13 = 39,916.28/x
  3. Step 3: Cross multiply
    99,905.69x = 149,761.13 × 39,916.28
  4. Step 4: Simplify right side
    99,905.69x = 5,977,906,249.81
  5. Step 5: Solve for x
    x = 5,977,906,249.81/99,905.69
  6. Step 6: Final answer
    x = 59,835.50

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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.