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Finding the Fourth Proportional to 53,368.85, 80,054.90 and 18,308

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Solution

The fourth proportional to 53,368.85, 80,054.90 and 18,308 is: 27,462.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,368.85 : 80,054.90 = 18,308 : x
  2. Step 2: Convert to fraction form
    53,368.85/80,054.90 = 18,308/x
  3. Step 3: Cross multiply
    53,368.85x = 80,054.90 × 18,308
  4. Step 4: Simplify right side
    53,368.85x = 1,465,645,017.66
  5. Step 5: Solve for x
    x = 1,465,645,017.66/53,368.85
  6. Step 6: Final answer
    x = 27,462.56

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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.