Home / 51,099.49-76,658.51-21,113.79

Finding the Fourth Proportional to 51,099.49, 76,658.51 and 21,113.79

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Solution

The fourth proportional to 51,099.49, 76,658.51 and 21,113.79 is: 31,674.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,099.49 : 76,658.51 = 21,113.79 : x
  2. Step 2: Convert to fraction form
    51,099.49/76,658.51 = 21,113.79/x
  3. Step 3: Cross multiply
    51,099.49x = 76,658.51 × 21,113.79
  4. Step 4: Simplify right side
    51,099.49x = 1,618,551,681.85
  5. Step 5: Solve for x
    x = 1,618,551,681.85/51,099.49
  6. Step 6: Final answer
    x = 31,674.52

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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.