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Finding the Fourth Proportional to 55,861.70, 77,063.46 and 49,494.79

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Solution

The fourth proportional to 55,861.70, 77,063.46 and 49,494.79 is: 68,280.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,861.70 : 77,063.46 = 49,494.79 : x
  2. Step 2: Convert to fraction form
    55,861.70/77,063.46 = 49,494.79/x
  3. Step 3: Cross multiply
    55,861.70x = 77,063.46 × 49,494.79
  4. Step 4: Simplify right side
    55,861.70x = 3,814,239,384.06
  5. Step 5: Solve for x
    x = 3,814,239,384.06/55,861.70
  6. Step 6: Final answer
    x = 68,280.04

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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.