Home / 91,855.10-137,835.80-38,542.32

Finding the Fourth Proportional to 91,855.10, 137,835.80 and 38,542.32

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Solution

The fourth proportional to 91,855.10, 137,835.80 and 38,542.32 is: 57,835.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,855.10 : 137,835.80 = 38,542.32 : x
  2. Step 2: Convert to fraction form
    91,855.10/137,835.80 = 38,542.32/x
  3. Step 3: Cross multiply
    91,855.10x = 137,835.80 × 38,542.32
  4. Step 4: Simplify right side
    91,855.10x = 5,312,511,318.34
  5. Step 5: Solve for x
    x = 5,312,511,318.34/91,855.10
  6. Step 6: Final answer
    x = 57,835.78

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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.