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Finding the Fourth Proportional to 93,359.92, 128,839.80 and 50,920.80

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Solution

The fourth proportional to 93,359.92, 128,839.80 and 50,920.80 is: 70,272.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,359.92 : 128,839.80 = 50,920.80 : x
  2. Step 2: Convert to fraction form
    93,359.92/128,839.80 = 50,920.80/x
  3. Step 3: Cross multiply
    93,359.92x = 128,839.80 × 50,920.80
  4. Step 4: Simplify right side
    93,359.92x = 6,560,625,687.84
  5. Step 5: Solve for x
    x = 6,560,625,687.84/93,359.92
  6. Step 6: Final answer
    x = 70,272.40

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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.