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Finding the Fourth Proportional to 57,916.62, 79,909.64 and 36,409.60

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Solution

The fourth proportional to 57,916.62, 79,909.64 and 36,409.60 is: 50,235.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,916.62 : 79,909.64 = 36,409.60 : x
  2. Step 2: Convert to fraction form
    57,916.62/79,909.64 = 36,409.60/x
  3. Step 3: Cross multiply
    57,916.62x = 79,909.64 × 36,409.60
  4. Step 4: Simplify right side
    57,916.62x = 2,909,478,082.92
  5. Step 5: Solve for x
    x = 2,909,478,082.92/57,916.62
  6. Step 6: Final answer
    x = 50,235.63

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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.