Home / 77,110.70-115,666.05-47,561.90

Finding the Fourth Proportional to 77,110.70, 115,666.05 and 47,561.90

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Solution

The fourth proportional to 77,110.70, 115,666.05 and 47,561.90 is: 71,342.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,110.70 : 115,666.05 = 47,561.90 : x
  2. Step 2: Convert to fraction form
    77,110.70/115,666.05 = 47,561.90/x
  3. Step 3: Cross multiply
    77,110.70x = 115,666.05 × 47,561.90
  4. Step 4: Simplify right side
    77,110.70x = 5,501,297,103.50
  5. Step 5: Solve for x
    x = 5,501,297,103.50/77,110.70
  6. Step 6: Final answer
    x = 71,342.85

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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.