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Finding the Fourth Proportional to 80,358.42, 110,985.40 and 54,820.94

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Solution

The fourth proportional to 80,358.42, 110,985.40 and 54,820.94 is: 75,714.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,358.42 : 110,985.40 = 54,820.94 : x
  2. Step 2: Convert to fraction form
    80,358.42/110,985.40 = 54,820.94/x
  3. Step 3: Cross multiply
    80,358.42x = 110,985.40 × 54,820.94
  4. Step 4: Simplify right side
    80,358.42x = 6,084,323,954.28
  5. Step 5: Solve for x
    x = 6,084,323,954.28/80,358.42
  6. Step 6: Final answer
    x = 75,714.83

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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.