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Finding the Fourth Proportional to 101,345.85, 151,811.21 and 56,879.21

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Solution

The fourth proportional to 101,345.85, 151,811.21 and 56,879.21 is: 85,202.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,345.85 : 151,811.21 = 56,879.21 : x
  2. Step 2: Convert to fraction form
    101,345.85/151,811.21 = 56,879.21/x
  3. Step 3: Cross multiply
    101,345.85x = 151,811.21 × 56,879.21
  4. Step 4: Simplify right side
    101,345.85x = 8,634,902,215.67
  5. Step 5: Solve for x
    x = 8,634,902,215.67/101,345.85
  6. Step 6: Final answer
    x = 85,202.33

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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.