Home / 72,510.44-108,761.31-43,115.36

Finding the Fourth Proportional to 72,510.44, 108,761.31 and 43,115.36

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Solution

The fourth proportional to 72,510.44, 108,761.31 and 43,115.36 is: 64,670.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,510.44 : 108,761.31 = 43,115.36 : x
  2. Step 2: Convert to fraction form
    72,510.44/108,761.31 = 43,115.36/x
  3. Step 3: Cross multiply
    72,510.44x = 108,761.31 × 43,115.36
  4. Step 4: Simplify right side
    72,510.44x = 4,689,282,490.92
  5. Step 5: Solve for x
    x = 4,689,282,490.92/72,510.44
  6. Step 6: Final answer
    x = 64,670.45

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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.