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Finding the Fourth Proportional to 53,657.60, 80,486.40 and 31,481.60

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Solution

The fourth proportional to 53,657.60, 80,486.40 and 31,481.60 is: 47,222.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,657.60 : 80,486.40 = 31,481.60 : x
  2. Step 2: Convert to fraction form
    53,657.60/80,486.40 = 31,481.60/x
  3. Step 3: Cross multiply
    53,657.60x = 80,486.40 × 31,481.60
  4. Step 4: Simplify right side
    53,657.60x = 2,533,840,650.24
  5. Step 5: Solve for x
    x = 2,533,840,650.24/53,657.60
  6. Step 6: Final answer
    x = 47,222.40

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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.