Home / 87,927.36-121,272.81-75,683.61

Finding the Fourth Proportional to 87,927.36, 121,272.81 and 75,683.61

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Solution

The fourth proportional to 87,927.36, 121,272.81 and 75,683.61 is: 104,385.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,927.36 : 121,272.81 = 75,683.61 : x
  2. Step 2: Convert to fraction form
    87,927.36/121,272.81 = 75,683.61/x
  3. Step 3: Cross multiply
    87,927.36x = 121,272.81 × 75,683.61
  4. Step 4: Simplify right side
    87,927.36x = 9,178,364,055.64
  5. Step 5: Solve for x
    x = 9,178,364,055.64/87,927.36
  6. Step 6: Final answer
    x = 104,385.76

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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.