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Finding the Fourth Proportional to 90,309, 135,550.98 and 43,594.68

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Solution

The fourth proportional to 90,309, 135,550.98 and 43,594.68 is: 65,434.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,309 : 135,550.98 = 43,594.68 : x
  2. Step 2: Convert to fraction form
    90,309/135,550.98 = 43,594.68/x
  3. Step 3: Cross multiply
    90,309x = 135,550.98 × 43,594.68
  4. Step 4: Simplify right side
    90,309x = 5,909,301,596.79
  5. Step 5: Solve for x
    x = 5,909,301,596.79/90,309
  6. Step 6: Final answer
    x = 65,434.25

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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.