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Finding the Fourth Proportional to 57,240.70, 85,861.05 and 48,784.30

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Solution

The fourth proportional to 57,240.70, 85,861.05 and 48,784.30 is: 73,176.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,240.70 : 85,861.05 = 48,784.30 : x
  2. Step 2: Convert to fraction form
    57,240.70/85,861.05 = 48,784.30/x
  3. Step 3: Cross multiply
    57,240.70x = 85,861.05 × 48,784.30
  4. Step 4: Simplify right side
    57,240.70x = 4,188,671,221.52
  5. Step 5: Solve for x
    x = 4,188,671,221.52/57,240.70
  6. Step 6: Final answer
    x = 73,176.45

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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.