Home / 91,808.07-137,711.85-51,808.87

Finding the Fourth Proportional to 91,808.07, 137,711.85 and 51,808.87

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Solution

The fourth proportional to 91,808.07, 137,711.85 and 51,808.87 is: 77,713.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,808.07 : 137,711.85 = 51,808.87 : x
  2. Step 2: Convert to fraction form
    91,808.07/137,711.85 = 51,808.87/x
  3. Step 3: Cross multiply
    91,808.07x = 137,711.85 × 51,808.87
  4. Step 4: Simplify right side
    91,808.07x = 7,134,695,334.11
  5. Step 5: Solve for x
    x = 7,134,695,334.11/91,808.07
  6. Step 6: Final answer
    x = 77,713.16

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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.