Home / 72,130.20-108,122.40-32,715.60

Finding the Fourth Proportional to 72,130.20, 108,122.40 and 32,715.60

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Solution

The fourth proportional to 72,130.20, 108,122.40 and 32,715.60 is: 49,040.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,130.20 : 108,122.40 = 32,715.60 : x
  2. Step 2: Convert to fraction form
    72,130.20/108,122.40 = 32,715.60/x
  3. Step 3: Cross multiply
    72,130.20x = 108,122.40 × 32,715.60
  4. Step 4: Simplify right side
    72,130.20x = 3,537,289,189.44
  5. Step 5: Solve for x
    x = 3,537,289,189.44/72,130.20
  6. Step 6: Final answer
    x = 49,040.34

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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.