Home / 81,788.32-112,869.70-49,974.76

Finding the Fourth Proportional to 81,788.32, 112,869.70 and 49,974.76

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Solution

The fourth proportional to 81,788.32, 112,869.70 and 49,974.76 is: 68,966.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,788.32 : 112,869.70 = 49,974.76 : x
  2. Step 2: Convert to fraction form
    81,788.32/112,869.70 = 49,974.76/x
  3. Step 3: Cross multiply
    81,788.32x = 112,869.70 × 49,974.76
  4. Step 4: Simplify right side
    81,788.32x = 5,640,636,168.77
  5. Step 5: Solve for x
    x = 5,640,636,168.77/81,788.32
  6. Step 6: Final answer
    x = 68,966.28

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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.