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Finding the Fourth Proportional to 53,580.52, 80,359.80 and 20,289.12

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Solution

The fourth proportional to 53,580.52, 80,359.80 and 20,289.12 is: 30,429.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,580.52 : 80,359.80 = 20,289.12 : x
  2. Step 2: Convert to fraction form
    53,580.52/80,359.80 = 20,289.12/x
  3. Step 3: Cross multiply
    53,580.52x = 80,359.80 × 20,289.12
  4. Step 4: Simplify right side
    53,580.52x = 1,630,429,625.38
  5. Step 5: Solve for x
    x = 1,630,429,625.38/53,580.52
  6. Step 6: Final answer
    x = 30,429.52

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1.5x scale

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.