Home / 90,991.15-136,427.90-43,605.14

Finding the Fourth Proportional to 90,991.15, 136,427.90 and 43,605.14

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Solution

The fourth proportional to 90,991.15, 136,427.90 and 43,605.14 is: 65,379.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,991.15 : 136,427.90 = 43,605.14 : x
  2. Step 2: Convert to fraction form
    90,991.15/136,427.90 = 43,605.14/x
  3. Step 3: Cross multiply
    90,991.15x = 136,427.90 × 43,605.14
  4. Step 4: Simplify right side
    90,991.15x = 5,948,956,779.24
  5. Step 5: Solve for x
    x = 5,948,956,779.24/90,991.15
  6. Step 6: Final answer
    x = 65,379.51

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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.