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Finding the Fourth Proportional to 71,048.32, 98,044.72 and 39,214.88

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Solution

The fourth proportional to 71,048.32, 98,044.72 and 39,214.88 is: 54,115.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,048.32 : 98,044.72 = 39,214.88 : x
  2. Step 2: Convert to fraction form
    71,048.32/98,044.72 = 39,214.88/x
  3. Step 3: Cross multiply
    71,048.32x = 98,044.72 × 39,214.88
  4. Step 4: Simplify right side
    71,048.32x = 3,844,811,929.43
  5. Step 5: Solve for x
    x = 3,844,811,929.43/71,048.32
  6. Step 6: Final answer
    x = 54,115.45

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1.5x scale

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.