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Finding the Fourth Proportional to 55,585.64, 83,387.12 and 18,641

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Solution

The fourth proportional to 55,585.64, 83,387.12 and 18,641 is: 27,964.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,585.64 : 83,387.12 = 18,641 : x
  2. Step 2: Convert to fraction form
    55,585.64/83,387.12 = 18,641/x
  3. Step 3: Cross multiply
    55,585.64x = 83,387.12 × 18,641
  4. Step 4: Simplify right side
    55,585.64x = 1,554,419,303.92
  5. Step 5: Solve for x
    x = 1,554,419,303.92/55,585.64
  6. Step 6: Final answer
    x = 27,964.40

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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.