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Finding the Fourth Proportional to 101,879.56, 152,878.82 and 42,710.68

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Solution

The fourth proportional to 101,879.56, 152,878.82 and 42,710.68 is: 64,090.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,879.56 : 152,878.82 = 42,710.68 : x
  2. Step 2: Convert to fraction form
    101,879.56/152,878.82 = 42,710.68/x
  3. Step 3: Cross multiply
    101,879.56x = 152,878.82 × 42,710.68
  4. Step 4: Simplify right side
    101,879.56x = 6,529,558,359.80
  5. Step 5: Solve for x
    x = 6,529,558,359.80/101,879.56
  6. Step 6: Final answer
    x = 64,090.96

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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.