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Finding the Fourth Proportional to 93,078.80, 128,458.23 and 54,850.26

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Solution

The fourth proportional to 93,078.80, 128,458.23 and 54,850.26 is: 75,698.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,078.80 : 128,458.23 = 54,850.26 : x
  2. Step 2: Convert to fraction form
    93,078.80/128,458.23 = 54,850.26/x
  3. Step 3: Cross multiply
    93,078.80x = 128,458.23 × 54,850.26
  4. Step 4: Simplify right side
    93,078.80x = 7,045,967,744.94
  5. Step 5: Solve for x
    x = 7,045,967,744.94/93,078.80
  6. Step 6: Final answer
    x = 75,698.96

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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.