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Finding the Fourth Proportional to 90,010.90, 134,992.86 and 26,814.16

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Solution

The fourth proportional to 90,010.90, 134,992.86 and 26,814.16 is: 40,214.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,010.90 : 134,992.86 = 26,814.16 : x
  2. Step 2: Convert to fraction form
    90,010.90/134,992.86 = 26,814.16/x
  3. Step 3: Cross multiply
    90,010.90x = 134,992.86 × 26,814.16
  4. Step 4: Simplify right side
    90,010.90x = 3,619,720,146.90
  5. Step 5: Solve for x
    x = 3,619,720,146.90/90,010.90
  6. Step 6: Final answer
    x = 40,214.24

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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.