Home / 81,562.02-122,350.32-31,640.91

Finding the Fourth Proportional to 81,562.02, 122,350.32 and 31,640.91

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Solution

The fourth proportional to 81,562.02, 122,350.32 and 31,640.91 is: 47,464.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,562.02 : 122,350.32 = 31,640.91 : x
  2. Step 2: Convert to fraction form
    81,562.02/122,350.32 = 31,640.91/x
  3. Step 3: Cross multiply
    81,562.02x = 122,350.32 × 31,640.91
  4. Step 4: Simplify right side
    81,562.02x = 3,871,275,463.59
  5. Step 5: Solve for x
    x = 3,871,275,463.59/81,562.02
  6. Step 6: Final answer
    x = 47,464.19

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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.