Home / 79,289.30-118,938.06-20,125.55

Finding the Fourth Proportional to 79,289.30, 118,938.06 and 20,125.55

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Solution

The fourth proportional to 79,289.30, 118,938.06 and 20,125.55 is: 30,189.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,289.30 : 118,938.06 = 20,125.55 : x
  2. Step 2: Convert to fraction form
    79,289.30/118,938.06 = 20,125.55/x
  3. Step 3: Cross multiply
    79,289.30x = 118,938.06 × 20,125.55
  4. Step 4: Simplify right side
    79,289.30x = 2,393,693,278.74
  5. Step 5: Solve for x
    x = 2,393,693,278.74/79,289.30
  6. Step 6: Final answer
    x = 30,189.36

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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.