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Finding the Fourth Proportional to 93,162.53, 128,564.88 and 50,721.50

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Solution

The fourth proportional to 93,162.53, 128,564.88 and 50,721.50 is: 69,995.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,162.53 : 128,564.88 = 50,721.50 : x
  2. Step 2: Convert to fraction form
    93,162.53/128,564.88 = 50,721.50/x
  3. Step 3: Cross multiply
    93,162.53x = 128,564.88 × 50,721.50
  4. Step 4: Simplify right side
    93,162.53x = 6,521,003,560.92
  5. Step 5: Solve for x
    x = 6,521,003,560.92/93,162.53
  6. Step 6: Final answer
    x = 69,995.99

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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.