Home / 45,707.06-68,569.20-20,748.87

Finding the Fourth Proportional to 45,707.06, 68,569.20 and 20,748.87

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Solution

The fourth proportional to 45,707.06, 68,569.20 and 20,748.87 is: 31,127.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,707.06 : 68,569.20 = 20,748.87 : x
  2. Step 2: Convert to fraction form
    45,707.06/68,569.20 = 20,748.87/x
  3. Step 3: Cross multiply
    45,707.06x = 68,569.20 × 20,748.87
  4. Step 4: Simplify right side
    45,707.06x = 1,422,733,416.80
  5. Step 5: Solve for x
    x = 1,422,733,416.80/45,707.06
  6. Step 6: Final answer
    x = 31,127.21

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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.