Home / 57,430.75-86,146.13-17,990.94

Finding the Fourth Proportional to 57,430.75, 86,146.13 and 17,990.94

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Solution

The fourth proportional to 57,430.75, 86,146.13 and 17,990.94 is: 26,986.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,430.75 : 86,146.13 = 17,990.94 : x
  2. Step 2: Convert to fraction form
    57,430.75/86,146.13 = 17,990.94/x
  3. Step 3: Cross multiply
    57,430.75x = 86,146.13 × 17,990.94
  4. Step 4: Simplify right side
    57,430.75x = 1,549,849,856.06
  5. Step 5: Solve for x
    x = 1,549,849,856.06/57,430.75
  6. Step 6: Final answer
    x = 26,986.41

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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.