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Finding the Fourth Proportional to 93,127.70, 128,512.42 and 52,840.60

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Solution

The fourth proportional to 93,127.70, 128,512.42 and 52,840.60 is: 72,917.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,127.70 : 128,512.42 = 52,840.60 : x
  2. Step 2: Convert to fraction form
    93,127.70/128,512.42 = 52,840.60/x
  3. Step 3: Cross multiply
    93,127.70x = 128,512.42 × 52,840.60
  4. Step 4: Simplify right side
    93,127.70x = 6,790,672,926.87
  5. Step 5: Solve for x
    x = 6,790,672,926.87/93,127.70
  6. Step 6: Final answer
    x = 72,917.86

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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.