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Finding the Fourth Proportional to 55,330.40, 82,984.80 and 18,394.40

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Solution

The fourth proportional to 55,330.40, 82,984.80 and 18,394.40 is: 27,588.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,330.40 : 82,984.80 = 18,394.40 : x
  2. Step 2: Convert to fraction form
    55,330.40/82,984.80 = 18,394.40/x
  3. Step 3: Cross multiply
    55,330.40x = 82,984.80 × 18,394.40
  4. Step 4: Simplify right side
    55,330.40x = 1,526,455,605.12
  5. Step 5: Solve for x
    x = 1,526,455,605.12/55,330.40
  6. Step 6: Final answer
    x = 27,588.01

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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.