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Finding the Fourth Proportional to 101,662.92, 140,290.80 and 56,342.82

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Solution

The fourth proportional to 101,662.92, 140,290.80 and 56,342.82 is: 77,750.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,662.92 : 140,290.80 = 56,342.82 : x
  2. Step 2: Convert to fraction form
    101,662.92/140,290.80 = 56,342.82/x
  3. Step 3: Cross multiply
    101,662.92x = 140,290.80 × 56,342.82
  4. Step 4: Simplify right side
    101,662.92x = 7,904,379,292.06
  5. Step 5: Solve for x
    x = 7,904,379,292.06/101,662.92
  6. Step 6: Final answer
    x = 77,750.86

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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.