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Finding the Fourth Proportional to 93,149.34, 128,542.60 and 52,860.70

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Solution

The fourth proportional to 93,149.34, 128,542.60 and 52,860.70 is: 72,945.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,149.34 : 128,542.60 = 52,860.70 : x
  2. Step 2: Convert to fraction form
    93,149.34/128,542.60 = 52,860.70/x
  3. Step 3: Cross multiply
    93,149.34x = 128,542.60 × 52,860.70
  4. Step 4: Simplify right side
    93,149.34x = 6,794,851,745.23
  5. Step 5: Solve for x
    x = 6,794,851,745.23/93,149.34
  6. Step 6: Final answer
    x = 72,945.78

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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.