Home / 79,121.40-118,683.30-25,813.14

Finding the Fourth Proportional to 79,121.40, 118,683.30 and 25,813.14

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Solution

The fourth proportional to 79,121.40, 118,683.30 and 25,813.14 is: 38,720.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,121.40 : 118,683.30 = 25,813.14 : x
  2. Step 2: Convert to fraction form
    79,121.40/118,683.30 = 25,813.14/x
  3. Step 3: Cross multiply
    79,121.40x = 118,683.30 × 25,813.14
  4. Step 4: Simplify right side
    79,121.40x = 3,063,588,638.56
  5. Step 5: Solve for x
    x = 3,063,588,638.56/79,121.40
  6. Step 6: Final answer
    x = 38,720.10

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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.