Home / 43,153.75-64,637.14-20,920.62

Finding the Fourth Proportional to 43,153.75, 64,637.14 and 20,920.62

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Solution

The fourth proportional to 43,153.75, 64,637.14 and 20,920.62 is: 31,335.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,153.75 : 64,637.14 = 20,920.62 : x
  2. Step 2: Convert to fraction form
    43,153.75/64,637.14 = 20,920.62/x
  3. Step 3: Cross multiply
    43,153.75x = 64,637.14 × 20,920.62
  4. Step 4: Simplify right side
    43,153.75x = 1,352,249,043.83
  5. Step 5: Solve for x
    x = 1,352,249,043.83/43,153.75
  6. Step 6: Final answer
    x = 31,335.61

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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.