Home / 90,042.86-135,071.12-26,858.05

Finding the Fourth Proportional to 90,042.86, 135,071.12 and 26,858.05

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Solution

The fourth proportional to 90,042.86, 135,071.12 and 26,858.05 is: 40,289.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,042.86 : 135,071.12 = 26,858.05 : x
  2. Step 2: Convert to fraction form
    90,042.86/135,071.12 = 26,858.05/x
  3. Step 3: Cross multiply
    90,042.86x = 135,071.12 × 26,858.05
  4. Step 4: Simplify right side
    90,042.86x = 3,627,746,623.98
  5. Step 5: Solve for x
    x = 3,627,746,623.98/90,042.86
  6. Step 6: Final answer
    x = 40,289.11

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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.