Home / 61,010.10-91,518.42-18,919.26

Finding the Fourth Proportional to 61,010.10, 91,518.42 and 18,919.26

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Solution

The fourth proportional to 61,010.10, 91,518.42 and 18,919.26 is: 28,379.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,010.10 : 91,518.42 = 18,919.26 : x
  2. Step 2: Convert to fraction form
    61,010.10/91,518.42 = 18,919.26/x
  3. Step 3: Cross multiply
    61,010.10x = 91,518.42 × 18,919.26
  4. Step 4: Simplify right side
    61,010.10x = 1,731,460,782.77
  5. Step 5: Solve for x
    x = 1,731,460,782.77/61,010.10
  6. Step 6: Final answer
    x = 28,379.90

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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.