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Finding the Fourth Proportional to 93,139.44, 128,528.56 and 50,698

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Solution

The fourth proportional to 93,139.44, 128,528.56 and 50,698 is: 69,961.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,139.44 : 128,528.56 = 50,698 : x
  2. Step 2: Convert to fraction form
    93,139.44/128,528.56 = 50,698/x
  3. Step 3: Cross multiply
    93,139.44x = 128,528.56 × 50,698
  4. Step 4: Simplify right side
    93,139.44x = 6,516,140,934.88
  5. Step 5: Solve for x
    x = 6,516,140,934.88/93,139.44
  6. Step 6: Final answer
    x = 69,961.13

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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.