Home / 78,933.68-108,936-43,129.10

Finding the Fourth Proportional to 78,933.68, 108,936 and 43,129.10

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Solution

The fourth proportional to 78,933.68, 108,936 and 43,129.10 is: 59,522.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,933.68 : 108,936 = 43,129.10 : x
  2. Step 2: Convert to fraction form
    78,933.68/108,936 = 43,129.10/x
  3. Step 3: Cross multiply
    78,933.68x = 108,936 × 43,129.10
  4. Step 4: Simplify right side
    78,933.68x = 4,698,311,637.60
  5. Step 5: Solve for x
    x = 4,698,311,637.60/78,933.68
  6. Step 6: Final answer
    x = 59,522.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.