Home / 86,972.84-120,006.06-82,543.76

Finding the Fourth Proportional to 86,972.84, 120,006.06 and 82,543.76

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Solution

The fourth proportional to 86,972.84, 120,006.06 and 82,543.76 is: 113,894.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,972.84 : 120,006.06 = 82,543.76 : x
  2. Step 2: Convert to fraction form
    86,972.84/120,006.06 = 82,543.76/x
  3. Step 3: Cross multiply
    86,972.84x = 120,006.06 × 82,543.76
  4. Step 4: Simplify right side
    86,972.84x = 9,905,751,415.19
  5. Step 5: Solve for x
    x = 9,905,751,415.19/86,972.84
  6. Step 6: Final answer
    x = 113,894.77

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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.