Home / 57,430.89-86,146.36-17,991.07

Finding the Fourth Proportional to 57,430.89, 86,146.36 and 17,991.07

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Solution

The fourth proportional to 57,430.89, 86,146.36 and 17,991.07 is: 26,986.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,430.89 : 86,146.36 = 17,991.07 : x
  2. Step 2: Convert to fraction form
    57,430.89/86,146.36 = 17,991.07/x
  3. Step 3: Cross multiply
    57,430.89x = 86,146.36 × 17,991.07
  4. Step 4: Simplify right side
    57,430.89x = 1,549,864,932.66
  5. Step 5: Solve for x
    x = 1,549,864,932.66/57,430.89
  6. Step 6: Final answer
    x = 26,986.61

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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.