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Finding the Fourth Proportional to 53,408.87, 80,118.80 and 20,156.93

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Solution

The fourth proportional to 53,408.87, 80,118.80 and 20,156.93 is: 30,237.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,408.87 : 80,118.80 = 20,156.93 : x
  2. Step 2: Convert to fraction form
    53,408.87/80,118.80 = 20,156.93/x
  3. Step 3: Cross multiply
    53,408.87x = 80,118.80 × 20,156.93
  4. Step 4: Simplify right side
    53,408.87x = 1,614,949,043.28
  5. Step 5: Solve for x
    x = 1,614,949,043.28/53,408.87
  6. Step 6: Final answer
    x = 30,237.47

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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.