Home / 72,130.47-108,196.11-19,540.41

Finding the Fourth Proportional to 72,130.47, 108,196.11 and 19,540.41

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Solution

The fourth proportional to 72,130.47, 108,196.11 and 19,540.41 is: 29,310.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,130.47 : 108,196.11 = 19,540.41 : x
  2. Step 2: Convert to fraction form
    72,130.47/108,196.11 = 19,540.41/x
  3. Step 3: Cross multiply
    72,130.47x = 108,196.11 × 19,540.41
  4. Step 4: Simplify right side
    72,130.47x = 2,114,196,349.81
  5. Step 5: Solve for x
    x = 2,114,196,349.81/72,130.47
  6. Step 6: Final answer
    x = 29,310.72

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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.