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Finding the Fourth Proportional to 77,211.92, 116,336.96 and 69,824.72

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Solution

The fourth proportional to 77,211.92, 116,336.96 and 69,824.72 is: 105,206.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,211.92 : 116,336.96 = 69,824.72 : x
  2. Step 2: Convert to fraction form
    77,211.92/116,336.96 = 69,824.72/x
  3. Step 3: Cross multiply
    77,211.92x = 116,336.96 × 69,824.72
  4. Step 4: Simplify right side
    77,211.92x = 8,123,195,657.65
  5. Step 5: Solve for x
    x = 8,123,195,657.65/77,211.92
  6. Step 6: Final answer
    x = 105,206.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.