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Finding the Fourth Proportional to 101,881.53, 140,590.22 and 56,556.90

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Solution

The fourth proportional to 101,881.53, 140,590.22 and 56,556.90 is: 78,045.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,881.53 : 140,590.22 = 56,556.90 : x
  2. Step 2: Convert to fraction form
    101,881.53/140,590.22 = 56,556.90/x
  3. Step 3: Cross multiply
    101,881.53x = 140,590.22 × 56,556.90
  4. Step 4: Simplify right side
    101,881.53x = 7,951,346,730.73
  5. Step 5: Solve for x
    x = 7,951,346,730.73/101,881.53
  6. Step 6: Final answer
    x = 78,045.03

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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.