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Finding the Fourth Proportional to 76,031.40, 114,047.10 and 68,514.60

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Solution

The fourth proportional to 76,031.40, 114,047.10 and 68,514.60 is: 102,771.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,031.40 : 114,047.10 = 68,514.60 : x
  2. Step 2: Convert to fraction form
    76,031.40/114,047.10 = 68,514.60/x
  3. Step 3: Cross multiply
    76,031.40x = 114,047.10 × 68,514.60
  4. Step 4: Simplify right side
    76,031.40x = 7,813,891,437.66
  5. Step 5: Solve for x
    x = 7,813,891,437.66/76,031.40
  6. Step 6: Final answer
    x = 102,771.90

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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.