Home / 84,353.28-126,608.64-42,831.36

Finding the Fourth Proportional to 84,353.28, 126,608.64 and 42,831.36

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Solution

The fourth proportional to 84,353.28, 126,608.64 and 42,831.36 is: 64,287.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,353.28 : 126,608.64 = 42,831.36 : x
  2. Step 2: Convert to fraction form
    84,353.28/126,608.64 = 42,831.36/x
  3. Step 3: Cross multiply
    84,353.28x = 126,608.64 × 42,831.36
  4. Step 4: Simplify right side
    84,353.28x = 5,422,820,238.95
  5. Step 5: Solve for x
    x = 5,422,820,238.95/84,353.28
  6. Step 6: Final answer
    x = 64,287.01

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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.