Home / 42,716.97-64,089.17-20,531.96

Finding the Fourth Proportional to 42,716.97, 64,089.17 and 20,531.96

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Solution

The fourth proportional to 42,716.97, 64,089.17 and 20,531.96 is: 30,804.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,716.97 : 64,089.17 = 20,531.96 : x
  2. Step 2: Convert to fraction form
    42,716.97/64,089.17 = 20,531.96/x
  3. Step 3: Cross multiply
    42,716.97x = 64,089.17 × 20,531.96
  4. Step 4: Simplify right side
    42,716.97x = 1,315,875,851.77
  5. Step 5: Solve for x
    x = 1,315,875,851.77/42,716.97
  6. Step 6: Final answer
    x = 30,804.52

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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.