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Finding the Fourth Proportional to 55,130.88, 82,683.90 and 15,687.12

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Solution

The fourth proportional to 55,130.88, 82,683.90 and 15,687.12 is: 23,527.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,130.88 : 82,683.90 = 15,687.12 : x
  2. Step 2: Convert to fraction form
    55,130.88/82,683.90 = 15,687.12/x
  3. Step 3: Cross multiply
    55,130.88x = 82,683.90 × 15,687.12
  4. Step 4: Simplify right side
    55,130.88x = 1,297,072,261.37
  5. Step 5: Solve for x
    x = 1,297,072,261.37/55,130.88
  6. Step 6: Final answer
    x = 23,527.15

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1.5x scale

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.