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Finding the Fourth Proportional to 93,171, 128,578.26 and 50,731.84

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Solution

The fourth proportional to 93,171, 128,578.26 and 50,731.84 is: 70,011.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,171 : 128,578.26 = 50,731.84 : x
  2. Step 2: Convert to fraction form
    93,171/128,578.26 = 50,731.84/x
  3. Step 3: Cross multiply
    93,171x = 128,578.26 × 50,731.84
  4. Step 4: Simplify right side
    93,171x = 6,523,011,713.80
  5. Step 5: Solve for x
    x = 6,523,011,713.80/93,171
  6. Step 6: Final answer
    x = 70,011.18

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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.