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Finding the Fourth Proportional to 57,378.60, 79,137.54 and 42,262.92

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Solution

The fourth proportional to 57,378.60, 79,137.54 and 42,262.92 is: 58,289.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,378.60 : 79,137.54 = 42,262.92 : x
  2. Step 2: Convert to fraction form
    57,378.60/79,137.54 = 42,262.92/x
  3. Step 3: Cross multiply
    57,378.60x = 79,137.54 × 42,262.92
  4. Step 4: Simplify right side
    57,378.60x = 3,344,583,522.02
  5. Step 5: Solve for x
    x = 3,344,583,522.02/57,378.60
  6. Step 6: Final answer
    x = 58,289.74

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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.