Home / 91,789.48-137,723.68-49,699.63

Finding the Fourth Proportional to 91,789.48, 137,723.68 and 49,699.63

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Solution

The fourth proportional to 91,789.48, 137,723.68 and 49,699.63 is: 74,570.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,789.48 : 137,723.68 = 49,699.63 : x
  2. Step 2: Convert to fraction form
    91,789.48/137,723.68 = 49,699.63/x
  3. Step 3: Cross multiply
    91,789.48x = 137,723.68 × 49,699.63
  4. Step 4: Simplify right side
    91,789.48x = 6,844,815,938.24
  5. Step 5: Solve for x
    x = 6,844,815,938.24/91,789.48
  6. Step 6: Final answer
    x = 74,570.81

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1.5x scale

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.