Home / 81,545.68-122,121.48-46,378.72

Finding the Fourth Proportional to 81,545.68, 122,121.48 and 46,378.72

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Solution

The fourth proportional to 81,545.68, 122,121.48 and 46,378.72 is: 69,456.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,545.68 : 122,121.48 = 46,378.72 : x
  2. Step 2: Convert to fraction form
    81,545.68/122,121.48 = 46,378.72/x
  3. Step 3: Cross multiply
    81,545.68x = 122,121.48 × 46,378.72
  4. Step 4: Simplify right side
    81,545.68x = 5,663,837,926.91
  5. Step 5: Solve for x
    x = 5,663,837,926.91/81,545.68
  6. Step 6: Final answer
    x = 69,456.01

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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.