Home / 69,687.34-104,545.86-19,782.70

Finding the Fourth Proportional to 69,687.34, 104,545.86 and 19,782.70

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Solution

The fourth proportional to 69,687.34, 104,545.86 and 19,782.70 is: 29,678.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,687.34 : 104,545.86 = 19,782.70 : x
  2. Step 2: Convert to fraction form
    69,687.34/104,545.86 = 19,782.70/x
  3. Step 3: Cross multiply
    69,687.34x = 104,545.86 × 19,782.70
  4. Step 4: Simplify right side
    69,687.34x = 2,068,199,384.62
  5. Step 5: Solve for x
    x = 2,068,199,384.62/69,687.34
  6. Step 6: Final answer
    x = 29,678.27

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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.