Home / 57,123.40-85,685.10-50,999.80

Finding the Fourth Proportional to 57,123.40, 85,685.10 and 50,999.80

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Solution

The fourth proportional to 57,123.40, 85,685.10 and 50,999.80 is: 76,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,123.40 : 85,685.10 = 50,999.80 : x
  2. Step 2: Convert to fraction form
    57,123.40/85,685.10 = 50,999.80/x
  3. Step 3: Cross multiply
    57,123.40x = 85,685.10 × 50,999.80
  4. Step 4: Simplify right side
    57,123.40x = 4,369,922,962.98
  5. Step 5: Solve for x
    x = 4,369,922,962.98/57,123.40
  6. Step 6: Final answer
    x = 76,499.70

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Double scale
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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.