Home / 78,588.14-117,882.30-19,422.91

Finding the Fourth Proportional to 78,588.14, 117,882.30 and 19,422.91

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Solution

The fourth proportional to 78,588.14, 117,882.30 and 19,422.91 is: 29,134.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,588.14 : 117,882.30 = 19,422.91 : x
  2. Step 2: Convert to fraction form
    78,588.14/117,882.30 = 19,422.91/x
  3. Step 3: Cross multiply
    78,588.14x = 117,882.30 × 19,422.91
  4. Step 4: Simplify right side
    78,588.14x = 2,289,616,714.08
  5. Step 5: Solve for x
    x = 2,289,616,714.08/78,588.14
  6. Step 6: Final answer
    x = 29,134.38

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1.5x scale

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.