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Finding the Fourth Proportional to 93,281.38, 128,724.54 and 50,839

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Solution

The fourth proportional to 93,281.38, 128,724.54 and 50,839 is: 70,155.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,281.38 : 128,724.54 = 50,839 : x
  2. Step 2: Convert to fraction form
    93,281.38/128,724.54 = 50,839/x
  3. Step 3: Cross multiply
    93,281.38x = 128,724.54 × 50,839
  4. Step 4: Simplify right side
    93,281.38x = 6,544,226,889.06
  5. Step 5: Solve for x
    x = 6,544,226,889.06/93,281.38
  6. Step 6: Final answer
    x = 70,155.77

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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.