Home / 61,011.74-91,481.42-18,879.34

Finding the Fourth Proportional to 61,011.74, 91,481.42 and 18,879.34

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Solution

The fourth proportional to 61,011.74, 91,481.42 and 18,879.34 is: 28,307.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,011.74 : 91,481.42 = 18,879.34 : x
  2. Step 2: Convert to fraction form
    61,011.74/91,481.42 = 18,879.34/x
  3. Step 3: Cross multiply
    61,011.74x = 91,481.42 × 18,879.34
  4. Step 4: Simplify right side
    61,011.74x = 1,727,108,831.86
  5. Step 5: Solve for x
    x = 1,727,108,831.86/61,011.74
  6. Step 6: Final answer
    x = 28,307.81

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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.