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Finding the Fourth Proportional to 101,809.42, 140,474.43 and 58,779.58

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Solution

The fourth proportional to 101,809.42, 140,474.43 and 58,779.58 is: 81,102.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,809.42 : 140,474.43 = 58,779.58 : x
  2. Step 2: Convert to fraction form
    101,809.42/140,474.43 = 58,779.58/x
  3. Step 3: Cross multiply
    101,809.42x = 140,474.43 × 58,779.58
  4. Step 4: Simplify right side
    101,809.42x = 8,257,027,996.14
  5. Step 5: Solve for x
    x = 8,257,027,996.14/101,809.42
  6. Step 6: Final answer
    x = 81,102.79

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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.