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Finding the Fourth Proportional to 90,636.65, 135,968.79 and 46,239.19

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Solution

The fourth proportional to 90,636.65, 135,968.79 and 46,239.19 is: 69,365.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,636.65 : 135,968.79 = 46,239.19 : x
  2. Step 2: Convert to fraction form
    90,636.65/135,968.79 = 46,239.19/x
  3. Step 3: Cross multiply
    90,636.65x = 135,968.79 × 46,239.19
  4. Step 4: Simplify right side
    90,636.65x = 6,287,086,714.88
  5. Step 5: Solve for x
    x = 6,287,086,714.88/90,636.65
  6. Step 6: Final answer
    x = 69,365.83

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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.