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Finding the Fourth Proportional to 81,516.87, 112,491.86 and 45,706.77

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Solution

The fourth proportional to 81,516.87, 112,491.86 and 45,706.77 is: 63,074.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,516.87 : 112,491.86 = 45,706.77 : x
  2. Step 2: Convert to fraction form
    81,516.87/112,491.86 = 45,706.77/x
  3. Step 3: Cross multiply
    81,516.87x = 112,491.86 × 45,706.77
  4. Step 4: Simplify right side
    81,516.87x = 5,141,639,343.36
  5. Step 5: Solve for x
    x = 5,141,639,343.36/81,516.87
  6. Step 6: Final answer
    x = 63,074.54

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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.