Home / 57,160.04-85,742.10-19,721.33

Finding the Fourth Proportional to 57,160.04, 85,742.10 and 19,721.33

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Solution

The fourth proportional to 57,160.04, 85,742.10 and 19,721.33 is: 29,582.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,160.04 : 85,742.10 = 19,721.33 : x
  2. Step 2: Convert to fraction form
    57,160.04/85,742.10 = 19,721.33/x
  3. Step 3: Cross multiply
    57,160.04x = 85,742.10 × 19,721.33
  4. Step 4: Simplify right side
    57,160.04x = 1,690,947,820.28
  5. Step 5: Solve for x
    x = 1,690,947,820.28/57,160.04
  6. Step 6: Final answer
    x = 29,582.69

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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.