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Finding the Fourth Proportional to 70,929.48, 106,431.48 and 31,514.88

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Solution

The fourth proportional to 70,929.48, 106,431.48 and 31,514.88 is: 47,288.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,929.48 : 106,431.48 = 31,514.88 : x
  2. Step 2: Convert to fraction form
    70,929.48/106,431.48 = 31,514.88/x
  3. Step 3: Cross multiply
    70,929.48x = 106,431.48 × 31,514.88
  4. Step 4: Simplify right side
    70,929.48x = 3,354,175,320.42
  5. Step 5: Solve for x
    x = 3,354,175,320.42/70,929.48
  6. Step 6: Final answer
    x = 47,288.88

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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.