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Finding the Fourth Proportional to 53,243.08, 79,866.65 and 13,800.31

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Solution

The fourth proportional to 53,243.08, 79,866.65 and 13,800.31 is: 20,700.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,243.08 : 79,866.65 = 13,800.31 : x
  2. Step 2: Convert to fraction form
    53,243.08/79,866.65 = 13,800.31/x
  3. Step 3: Cross multiply
    53,243.08x = 79,866.65 × 13,800.31
  4. Step 4: Simplify right side
    53,243.08x = 1,102,184,528.66
  5. Step 5: Solve for x
    x = 1,102,184,528.66/53,243.08
  6. Step 6: Final answer
    x = 20,700.99

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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.