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Finding the Fourth Proportional to 57,770.70, 86,656.05 and 49,314.30

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Solution

The fourth proportional to 57,770.70, 86,656.05 and 49,314.30 is: 73,971.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,770.70 : 86,656.05 = 49,314.30 : x
  2. Step 2: Convert to fraction form
    57,770.70/86,656.05 = 49,314.30/x
  3. Step 3: Cross multiply
    57,770.70x = 86,656.05 × 49,314.30
  4. Step 4: Simplify right side
    57,770.70x = 4,273,382,446.52
  5. Step 5: Solve for x
    x = 4,273,382,446.52/57,770.70
  6. Step 6: Final answer
    x = 73,971.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.