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Finding the Fourth Proportional to 53,809.08, 80,714.03 and 18,748.68

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Solution

The fourth proportional to 53,809.08, 80,714.03 and 18,748.68 is: 28,123.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,809.08 : 80,714.03 = 18,748.68 : x
  2. Step 2: Convert to fraction form
    53,809.08/80,714.03 = 18,748.68/x
  3. Step 3: Cross multiply
    53,809.08x = 80,714.03 × 18,748.68
  4. Step 4: Simplify right side
    53,809.08x = 1,513,281,426.24
  5. Step 5: Solve for x
    x = 1,513,281,426.24/53,809.08
  6. Step 6: Final answer
    x = 28,123.16

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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.