Home / 42,881.88-64,344.75-20,417.97

Finding the Fourth Proportional to 42,881.88, 64,344.75 and 20,417.97

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Solution

The fourth proportional to 42,881.88, 64,344.75 and 20,417.97 is: 30,637.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,881.88 : 64,344.75 = 20,417.97 : x
  2. Step 2: Convert to fraction form
    42,881.88/64,344.75 = 20,417.97/x
  3. Step 3: Cross multiply
    42,881.88x = 64,344.75 × 20,417.97
  4. Step 4: Simplify right side
    42,881.88x = 1,313,789,175.16
  5. Step 5: Solve for x
    x = 1,313,789,175.16/42,881.88
  6. Step 6: Final answer
    x = 30,637.40

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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.