Home / 86,288.76-129,409.38-54,651.36

Finding the Fourth Proportional to 86,288.76, 129,409.38 and 54,651.36

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Solution

The fourth proportional to 86,288.76, 129,409.38 and 54,651.36 is: 81,961.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,288.76 : 129,409.38 = 54,651.36 : x
  2. Step 2: Convert to fraction form
    86,288.76/129,409.38 = 54,651.36/x
  3. Step 3: Cross multiply
    86,288.76x = 129,409.38 × 54,651.36
  4. Step 4: Simplify right side
    86,288.76x = 7,072,398,613.76
  5. Step 5: Solve for x
    x = 7,072,398,613.76/86,288.76
  6. Step 6: Final answer
    x = 81,961.99

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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.