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Finding the Fourth Proportional to 101,778.67, 140,471.37 and 56,471.23

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Solution

The fourth proportional to 101,778.67, 140,471.37 and 56,471.23 is: 77,939.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,778.67 : 140,471.37 = 56,471.23 : x
  2. Step 2: Convert to fraction form
    101,778.67/140,471.37 = 56,471.23/x
  3. Step 3: Cross multiply
    101,778.67x = 140,471.37 × 56,471.23
  4. Step 4: Simplify right side
    101,778.67x = 7,932,590,341.33
  5. Step 5: Solve for x
    x = 7,932,590,341.33/101,778.67
  6. Step 6: Final answer
    x = 77,939.62

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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.