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Finding the Fourth Proportional to 53,404.10, 80,106.15 and 13,965.20

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Solution

The fourth proportional to 53,404.10, 80,106.15 and 13,965.20 is: 20,947.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,404.10 : 80,106.15 = 13,965.20 : x
  2. Step 2: Convert to fraction form
    53,404.10/80,106.15 = 13,965.20/x
  3. Step 3: Cross multiply
    53,404.10x = 80,106.15 × 13,965.20
  4. Step 4: Simplify right side
    53,404.10x = 1,118,698,405.98
  5. Step 5: Solve for x
    x = 1,118,698,405.98/53,404.10
  6. Step 6: Final answer
    x = 20,947.80

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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.