Home / 81,710.10-112,773.06-76,373.82

Finding the Fourth Proportional to 81,710.10, 112,773.06 and 76,373.82

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Solution

The fourth proportional to 81,710.10, 112,773.06 and 76,373.82 is: 105,408.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,710.10 : 112,773.06 = 76,373.82 : x
  2. Step 2: Convert to fraction form
    81,710.10/112,773.06 = 76,373.82/x
  3. Step 3: Cross multiply
    81,710.10x = 112,773.06 × 76,373.82
  4. Step 4: Simplify right side
    81,710.10x = 8,612,909,385.29
  5. Step 5: Solve for x
    x = 8,612,909,385.29/81,710.10
  6. Step 6: Final answer
    x = 105,408.14

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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.