Home / 91,205.58-136,715.40-51,679.20

Finding the Fourth Proportional to 91,205.58, 136,715.40 and 51,679.20

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Solution

The fourth proportional to 91,205.58, 136,715.40 and 51,679.20 is: 77,466.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,205.58 : 136,715.40 = 51,679.20 : x
  2. Step 2: Convert to fraction form
    91,205.58/136,715.40 = 51,679.20/x
  3. Step 3: Cross multiply
    91,205.58x = 136,715.40 × 51,679.20
  4. Step 4: Simplify right side
    91,205.58x = 7,065,342,499.68
  5. Step 5: Solve for x
    x = 7,065,342,499.68/91,205.58
  6. Step 6: Final answer
    x = 77,466.12

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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.