Home / 86,929.19-119,958.13-53,388.71

Finding the Fourth Proportional to 86,929.19, 119,958.13 and 53,388.71

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Solution

The fourth proportional to 86,929.19, 119,958.13 and 53,388.71 is: 73,673.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,929.19 : 119,958.13 = 53,388.71 : x
  2. Step 2: Convert to fraction form
    86,929.19/119,958.13 = 53,388.71/x
  3. Step 3: Cross multiply
    86,929.19x = 119,958.13 × 53,388.71
  4. Step 4: Simplify right side
    86,929.19x = 6,404,409,814.71
  5. Step 5: Solve for x
    x = 6,404,409,814.71/86,929.19
  6. Step 6: Final answer
    x = 73,673.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.