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Finding the Fourth Proportional to 55,080, 82,621.62 and 13,527

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Solution

The fourth proportional to 55,080, 82,621.62 and 13,527 is: 20,290.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,080 : 82,621.62 = 13,527 : x
  2. Step 2: Convert to fraction form
    55,080/82,621.62 = 13,527/x
  3. Step 3: Cross multiply
    55,080x = 82,621.62 × 13,527
  4. Step 4: Simplify right side
    55,080x = 1,117,622,653.74
  5. Step 5: Solve for x
    x = 1,117,622,653.74/55,080
  6. Step 6: Final answer
    x = 20,290.90

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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.