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Finding the Fourth Proportional to 53,929.40, 80,894.10 and 51,654.20

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Solution

The fourth proportional to 53,929.40, 80,894.10 and 51,654.20 is: 77,481.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,929.40 : 80,894.10 = 51,654.20 : x
  2. Step 2: Convert to fraction form
    53,929.40/80,894.10 = 51,654.20/x
  3. Step 3: Cross multiply
    53,929.40x = 80,894.10 × 51,654.20
  4. Step 4: Simplify right side
    53,929.40x = 4,178,520,020.22
  5. Step 5: Solve for x
    x = 4,178,520,020.22/53,929.40
  6. Step 6: Final answer
    x = 77,481.30

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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.