Home / 81,531.54-112,461.75-58,903.79

Finding the Fourth Proportional to 81,531.54, 112,461.75 and 58,903.79

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Solution

The fourth proportional to 81,531.54, 112,461.75 and 58,903.79 is: 81,249.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,531.54 : 112,461.75 = 58,903.79 : x
  2. Step 2: Convert to fraction form
    81,531.54/112,461.75 = 58,903.79/x
  3. Step 3: Cross multiply
    81,531.54x = 112,461.75 × 58,903.79
  4. Step 4: Simplify right side
    81,531.54x = 6,624,422,742.72
  5. Step 5: Solve for x
    x = 6,624,422,742.72/81,531.54
  6. Step 6: Final answer
    x = 81,249.82

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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.