Home / 42,720.96-64,318.44-33,411.36

Finding the Fourth Proportional to 42,720.96, 64,318.44 and 33,411.36

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Solution

The fourth proportional to 42,720.96, 64,318.44 and 33,411.36 is: 50,302.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,720.96 : 64,318.44 = 33,411.36 : x
  2. Step 2: Convert to fraction form
    42,720.96/64,318.44 = 33,411.36/x
  3. Step 3: Cross multiply
    42,720.96x = 64,318.44 × 33,411.36
  4. Step 4: Simplify right side
    42,720.96x = 2,148,966,553.48
  5. Step 5: Solve for x
    x = 2,148,966,553.48/42,720.96
  6. Step 6: Final answer
    x = 50,302.39

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.