Home / 91,857.02-137,785.55-28,682.56

Finding the Fourth Proportional to 91,857.02, 137,785.55 and 28,682.56

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Solution

The fourth proportional to 91,857.02, 137,785.55 and 28,682.56 is: 43,023.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,857.02 : 137,785.55 = 28,682.56 : x
  2. Step 2: Convert to fraction form
    91,857.02/137,785.55 = 28,682.56/x
  3. Step 3: Cross multiply
    91,857.02x = 137,785.55 × 28,682.56
  4. Step 4: Simplify right side
    91,857.02x = 3,952,042,802.02
  5. Step 5: Solve for x
    x = 3,952,042,802.02/91,857.02
  6. Step 6: Final answer
    x = 43,023.85

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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.