Home / 91,790.20-137,654.11-31,804.68

Finding the Fourth Proportional to 91,790.20, 137,654.11 and 31,804.68

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Solution

The fourth proportional to 91,790.20, 137,654.11 and 31,804.68 is: 47,696.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,790.20 : 137,654.11 = 31,804.68 : x
  2. Step 2: Convert to fraction form
    91,790.20/137,654.11 = 31,804.68/x
  3. Step 3: Cross multiply
    91,790.20x = 137,654.11 × 31,804.68
  4. Step 4: Simplify right side
    91,790.20x = 4,378,044,700.89
  5. Step 5: Solve for x
    x = 4,378,044,700.89/91,790.20
  6. Step 6: Final answer
    x = 47,696.21

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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.