Home / 81,719.27-112,511.90-69,734.51

Finding the Fourth Proportional to 81,719.27, 112,511.90 and 69,734.51

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Solution

The fourth proportional to 81,719.27, 112,511.90 and 69,734.51 is: 96,011.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,719.27 : 112,511.90 = 69,734.51 : x
  2. Step 2: Convert to fraction form
    81,719.27/112,511.90 = 69,734.51/x
  3. Step 3: Cross multiply
    81,719.27x = 112,511.90 × 69,734.51
  4. Step 4: Simplify right side
    81,719.27x = 7,845,962,215.67
  5. Step 5: Solve for x
    x = 7,845,962,215.67/81,719.27
  6. Step 6: Final answer
    x = 96,011.16

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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.