Home / 91,813.59-137,425.13-47,379.83

Finding the Fourth Proportional to 91,813.59, 137,425.13 and 47,379.83

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Solution

The fourth proportional to 91,813.59, 137,425.13 and 47,379.83 is: 70,917.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,813.59 : 137,425.13 = 47,379.83 : x
  2. Step 2: Convert to fraction form
    91,813.59/137,425.13 = 47,379.83/x
  3. Step 3: Cross multiply
    91,813.59x = 137,425.13 × 47,379.83
  4. Step 4: Simplify right side
    91,813.59x = 6,511,178,373.10
  5. Step 5: Solve for x
    x = 6,511,178,373.10/91,813.59
  6. Step 6: Final answer
    x = 70,917.37

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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.