Home / 97,831.40-135,007.76-55,398.13

Finding the Fourth Proportional to 97,831.40, 135,007.76 and 55,398.13

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Solution

The fourth proportional to 97,831.40, 135,007.76 and 55,398.13 is: 76,449.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,831.40 : 135,007.76 = 55,398.13 : x
  2. Step 2: Convert to fraction form
    97,831.40/135,007.76 = 55,398.13/x
  3. Step 3: Cross multiply
    97,831.40x = 135,007.76 × 55,398.13
  4. Step 4: Simplify right side
    97,831.40x = 7,479,177,240.46
  5. Step 5: Solve for x
    x = 7,479,177,240.46/97,831.40
  6. Step 6: Final answer
    x = 76,449.66

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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.