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Finding the Fourth Proportional to 93,432.72, 128,940.32 and 50,993.60

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Solution

The fourth proportional to 93,432.72, 128,940.32 and 50,993.60 is: 70,372.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,432.72 : 128,940.32 = 50,993.60 : x
  2. Step 2: Convert to fraction form
    93,432.72/128,940.32 = 50,993.60/x
  3. Step 3: Cross multiply
    93,432.72x = 128,940.32 × 50,993.60
  4. Step 4: Simplify right side
    93,432.72x = 6,575,131,101.95
  5. Step 5: Solve for x
    x = 6,575,131,101.95/93,432.72
  6. Step 6: Final answer
    x = 70,372.90

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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.