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Finding the Fourth Proportional to 93,361.80, 128,841 and 50,920.20

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Solution

The fourth proportional to 93,361.80, 128,841 and 50,920.20 is: 70,270.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,361.80 : 128,841 = 50,920.20 : x
  2. Step 2: Convert to fraction form
    93,361.80/128,841 = 50,920.20/x
  3. Step 3: Cross multiply
    93,361.80x = 128,841 × 50,920.20
  4. Step 4: Simplify right side
    93,361.80x = 6,560,609,488.20
  5. Step 5: Solve for x
    x = 6,560,609,488.20/93,361.80
  6. Step 6: Final answer
    x = 70,270.81

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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.