Home / 91,807.07-137,710.35-51,807.87

Finding the Fourth Proportional to 91,807.07, 137,710.35 and 51,807.87

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Solution

The fourth proportional to 91,807.07, 137,710.35 and 51,807.87 is: 77,711.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,807.07 : 137,710.35 = 51,807.87 : x
  2. Step 2: Convert to fraction form
    91,807.07/137,710.35 = 51,807.87/x
  3. Step 3: Cross multiply
    91,807.07x = 137,710.35 × 51,807.87
  4. Step 4: Simplify right side
    91,807.07x = 7,134,479,910.45
  5. Step 5: Solve for x
    x = 7,134,479,910.45/91,807.07
  6. Step 6: Final answer
    x = 77,711.67

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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.