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Finding the Fourth Proportional to 53,849.60, 80,697.60 and 39,699.20

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Solution

The fourth proportional to 53,849.60, 80,697.60 and 39,699.20 is: 59,492.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,849.60 : 80,697.60 = 39,699.20 : x
  2. Step 2: Convert to fraction form
    53,849.60/80,697.60 = 39,699.20/x
  3. Step 3: Cross multiply
    53,849.60x = 80,697.60 × 39,699.20
  4. Step 4: Simplify right side
    53,849.60x = 3,203,630,161.92
  5. Step 5: Solve for x
    x = 3,203,630,161.92/53,849.60
  6. Step 6: Final answer
    x = 59,492.18

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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.