Home / 90,042.80-135,071.04-26,857.98

Finding the Fourth Proportional to 90,042.80, 135,071.04 and 26,857.98

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Solution

The fourth proportional to 90,042.80, 135,071.04 and 26,857.98 is: 40,289.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,042.80 : 135,071.04 = 26,857.98 : x
  2. Step 2: Convert to fraction form
    90,042.80/135,071.04 = 26,857.98/x
  3. Step 3: Cross multiply
    90,042.80x = 135,071.04 × 26,857.98
  4. Step 4: Simplify right side
    90,042.80x = 3,627,734,481.25
  5. Step 5: Solve for x
    x = 3,627,734,481.25/90,042.80
  6. Step 6: Final answer
    x = 40,289.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.