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Finding the Fourth Proportional to 93,272.31, 128,715.89 and 50,830.88

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Solution

The fourth proportional to 93,272.31, 128,715.89 and 50,830.88 is: 70,146.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,272.31 : 128,715.89 = 50,830.88 : x
  2. Step 2: Convert to fraction form
    93,272.31/128,715.89 = 50,830.88/x
  3. Step 3: Cross multiply
    93,272.31x = 128,715.89 × 50,830.88
  4. Step 4: Simplify right side
    93,272.31x = 6,542,741,060.95
  5. Step 5: Solve for x
    x = 6,542,741,060.95/93,272.31
  6. Step 6: Final answer
    x = 70,146.66

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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.