Home / 55,129.86-76,122.06-42,362.91

Finding the Fourth Proportional to 55,129.86, 76,122.06 and 42,362.91

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Solution

The fourth proportional to 55,129.86, 76,122.06 and 42,362.91 is: 58,493.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,129.86 : 76,122.06 = 42,362.91 : x
  2. Step 2: Convert to fraction form
    55,129.86/76,122.06 = 42,362.91/x
  3. Step 3: Cross multiply
    55,129.86x = 76,122.06 × 42,362.91
  4. Step 4: Simplify right side
    55,129.86x = 3,224,751,976.79
  5. Step 5: Solve for x
    x = 3,224,751,976.79/55,129.86
  6. Step 6: Final answer
    x = 58,493.75

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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.