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Finding the Fourth Proportional to 92,940.21, 139,223.21 and 42,951.47

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Solution

The fourth proportional to 92,940.21, 139,223.21 and 42,951.47 is: 64,340.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,940.21 : 139,223.21 = 42,951.47 : x
  2. Step 2: Convert to fraction form
    92,940.21/139,223.21 = 42,951.47/x
  3. Step 3: Cross multiply
    92,940.21x = 139,223.21 × 42,951.47
  4. Step 4: Simplify right side
    92,940.21x = 5,979,840,616.75
  5. Step 5: Solve for x
    x = 5,979,840,616.75/92,940.21
  6. Step 6: Final answer
    x = 64,340.73

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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.