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Finding the Fourth Proportional to 93,418.69, 128,920.52 and 50,979.95

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Solution

The fourth proportional to 93,418.69, 128,920.52 and 50,979.95 is: 70,353.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,418.69 : 128,920.52 = 50,979.95 : x
  2. Step 2: Convert to fraction form
    93,418.69/128,920.52 = 50,979.95/x
  3. Step 3: Cross multiply
    93,418.69x = 128,920.52 × 50,979.95
  4. Step 4: Simplify right side
    93,418.69x = 6,572,362,113.33
  5. Step 5: Solve for x
    x = 6,572,362,113.33/93,418.69
  6. Step 6: Final answer
    x = 70,353.83

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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.