Home / 72,461.31-108,520.13-57,420.06

Finding the Fourth Proportional to 72,461.31, 108,520.13 and 57,420.06

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Solution

The fourth proportional to 72,461.31, 108,520.13 and 57,420.06 is: 85,993.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,461.31 : 108,520.13 = 57,420.06 : x
  2. Step 2: Convert to fraction form
    72,461.31/108,520.13 = 57,420.06/x
  3. Step 3: Cross multiply
    72,461.31x = 108,520.13 × 57,420.06
  4. Step 4: Simplify right side
    72,461.31x = 6,231,232,112.41
  5. Step 5: Solve for x
    x = 6,231,232,112.41/72,461.31
  6. Step 6: Final answer
    x = 85,993.92

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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.