Home / 42,705.36-64,057.20-19,315.44

Finding the Fourth Proportional to 42,705.36, 64,057.20 and 19,315.44

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Solution

The fourth proportional to 42,705.36, 64,057.20 and 19,315.44 is: 28,972.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,705.36 : 64,057.20 = 19,315.44 : x
  2. Step 2: Convert to fraction form
    42,705.36/64,057.20 = 19,315.44/x
  3. Step 3: Cross multiply
    42,705.36x = 64,057.20 × 19,315.44
  4. Step 4: Simplify right side
    42,705.36x = 1,237,293,003.17
  5. Step 5: Solve for x
    x = 1,237,293,003.17/42,705.36
  6. Step 6: Final answer
    x = 28,972.78

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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.