Home / 91,681.20-137,406.96-49,559.76

Finding the Fourth Proportional to 91,681.20, 137,406.96 and 49,559.76

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Solution

The fourth proportional to 91,681.20, 137,406.96 and 49,559.76 is: 74,277.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,681.20 : 137,406.96 = 49,559.76 : x
  2. Step 2: Convert to fraction form
    91,681.20/137,406.96 = 49,559.76/x
  3. Step 3: Cross multiply
    91,681.20x = 137,406.96 × 49,559.76
  4. Step 4: Simplify right side
    91,681.20x = 6,809,855,959.93
  5. Step 5: Solve for x
    x = 6,809,855,959.93/91,681.20
  6. Step 6: Final answer
    x = 74,277.56

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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.