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Finding the Fourth Proportional to 40,235.60, 60,342.60 and 16,857.20

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Solution

The fourth proportional to 40,235.60, 60,342.60 and 16,857.20 is: 25,281.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,235.60 : 60,342.60 = 16,857.20 : x
  2. Step 2: Convert to fraction form
    40,235.60/60,342.60 = 16,857.20/x
  3. Step 3: Cross multiply
    40,235.60x = 60,342.60 × 16,857.20
  4. Step 4: Simplify right side
    40,235.60x = 1,017,207,276.72
  5. Step 5: Solve for x
    x = 1,017,207,276.72/40,235.60
  6. Step 6: Final answer
    x = 25,281.28

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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.