Home / 79,971.64-119,930.16-57,718.92

Finding the Fourth Proportional to 79,971.64, 119,930.16 and 57,718.92

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Solution

The fourth proportional to 79,971.64, 119,930.16 and 57,718.92 is: 86,558.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,971.64 : 119,930.16 = 57,718.92 : x
  2. Step 2: Convert to fraction form
    79,971.64/119,930.16 = 57,718.92/x
  3. Step 3: Cross multiply
    79,971.64x = 119,930.16 × 57,718.92
  4. Step 4: Simplify right side
    79,971.64x = 6,922,239,310.63
  5. Step 5: Solve for x
    x = 6,922,239,310.63/79,971.64
  6. Step 6: Final answer
    x = 86,558.68

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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.