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Finding the Fourth Proportional to 57,960.40, 86,940.60 and 48,118.90

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Solution

The fourth proportional to 57,960.40, 86,940.60 and 48,118.90 is: 72,178.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,960.40 : 86,940.60 = 48,118.90 : x
  2. Step 2: Convert to fraction form
    57,960.40/86,940.60 = 48,118.90/x
  3. Step 3: Cross multiply
    57,960.40x = 86,940.60 × 48,118.90
  4. Step 4: Simplify right side
    57,960.40x = 4,183,486,037.34
  5. Step 5: Solve for x
    x = 4,183,486,037.34/57,960.40
  6. Step 6: Final answer
    x = 72,178.35

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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.