Home / 81,815.05-112,902.82-53,520.13

Finding the Fourth Proportional to 81,815.05, 112,902.82 and 53,520.13

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Solution

The fourth proportional to 81,815.05, 112,902.82 and 53,520.13 is: 73,856.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,815.05 : 112,902.82 = 53,520.13 : x
  2. Step 2: Convert to fraction form
    81,815.05/112,902.82 = 53,520.13/x
  3. Step 3: Cross multiply
    81,815.05x = 112,902.82 × 53,520.13
  4. Step 4: Simplify right side
    81,815.05x = 6,042,573,603.77
  5. Step 5: Solve for x
    x = 6,042,573,603.77/81,815.05
  6. Step 6: Final answer
    x = 73,856.50

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1.5x scale

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.