Home / 55,105.13-76,051.49-30,912.77

Finding the Fourth Proportional to 55,105.13, 76,051.49 and 30,912.77

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Solution

The fourth proportional to 55,105.13, 76,051.49 and 30,912.77 is: 42,663.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,105.13 : 76,051.49 = 30,912.77 : x
  2. Step 2: Convert to fraction form
    55,105.13/76,051.49 = 30,912.77/x
  3. Step 3: Cross multiply
    55,105.13x = 76,051.49 × 30,912.77
  4. Step 4: Simplify right side
    55,105.13x = 2,350,962,218.53
  5. Step 5: Solve for x
    x = 2,350,962,218.53/55,105.13
  6. Step 6: Final answer
    x = 42,663.22

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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.