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Finding the Fourth Proportional to 57,706.83, 79,457.79 and 49,189.85

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Solution

The fourth proportional to 57,706.83, 79,457.79 and 49,189.85 is: 67,730.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,706.83 : 79,457.79 = 49,189.85 : x
  2. Step 2: Convert to fraction form
    57,706.83/79,457.79 = 49,189.85/x
  3. Step 3: Cross multiply
    57,706.83x = 79,457.79 × 49,189.85
  4. Step 4: Simplify right side
    57,706.83x = 3,908,516,856.57
  5. Step 5: Solve for x
    x = 3,908,516,856.57/57,706.83
  6. Step 6: Final answer
    x = 67,730.58

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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.