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Finding the Fourth Proportional to 49,800.90, 74,714.55 and 21,708.90

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Solution

The fourth proportional to 49,800.90, 74,714.55 and 21,708.90 is: 32,569.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,800.90 : 74,714.55 = 21,708.90 : x
  2. Step 2: Convert to fraction form
    49,800.90/74,714.55 = 21,708.90/x
  3. Step 3: Cross multiply
    49,800.90x = 74,714.55 × 21,708.90
  4. Step 4: Simplify right side
    49,800.90x = 1,621,970,694.50
  5. Step 5: Solve for x
    x = 1,621,970,694.50/49,800.90
  6. Step 6: Final answer
    x = 32,569.10

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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.