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Finding the Fourth Proportional to 57,189.34, 78,925.76 and 36,789.63

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Solution

The fourth proportional to 57,189.34, 78,925.76 and 36,789.63 is: 50,772.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,189.34 : 78,925.76 = 36,789.63 : x
  2. Step 2: Convert to fraction form
    57,189.34/78,925.76 = 36,789.63/x
  3. Step 3: Cross multiply
    57,189.34x = 78,925.76 × 36,789.63
  4. Step 4: Simplify right side
    57,189.34x = 2,903,649,165.91
  5. Step 5: Solve for x
    x = 2,903,649,165.91/57,189.34
  6. Step 6: Final answer
    x = 50,772.56

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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.