Home / 43,621.33-65,438.12-21,435.58

Finding the Fourth Proportional to 43,621.33, 65,438.12 and 21,435.58

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Solution

The fourth proportional to 43,621.33, 65,438.12 and 21,435.58 is: 32,156.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,621.33 : 65,438.12 = 21,435.58 : x
  2. Step 2: Convert to fraction form
    43,621.33/65,438.12 = 21,435.58/x
  3. Step 3: Cross multiply
    43,621.33x = 65,438.12 × 21,435.58
  4. Step 4: Simplify right side
    43,621.33x = 1,402,703,949.13
  5. Step 5: Solve for x
    x = 1,402,703,949.13/43,621.33
  6. Step 6: Final answer
    x = 32,156.38

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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.