Home / 97,831.40-135,007.83-55,398.20

Finding the Fourth Proportional to 97,831.40, 135,007.83 and 55,398.20

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Solution

The fourth proportional to 97,831.40, 135,007.83 and 55,398.20 is: 76,449.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,831.40 : 135,007.83 = 55,398.20 : x
  2. Step 2: Convert to fraction form
    97,831.40/135,007.83 = 55,398.20/x
  3. Step 3: Cross multiply
    97,831.40x = 135,007.83 × 55,398.20
  4. Step 4: Simplify right side
    97,831.40x = 7,479,190,092.87
  5. Step 5: Solve for x
    x = 7,479,190,092.87/97,831.40
  6. Step 6: Final answer
    x = 76,449.80

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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.