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Finding the Fourth Proportional to 40,574.60, 60,857.10 and 10,990.60

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Solution

The fourth proportional to 40,574.60, 60,857.10 and 10,990.60 is: 16,484.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,574.60 : 60,857.10 = 10,990.60 : x
  2. Step 2: Convert to fraction form
    40,574.60/60,857.10 = 10,990.60/x
  3. Step 3: Cross multiply
    40,574.60x = 60,857.10 × 10,990.60
  4. Step 4: Simplify right side
    40,574.60x = 668,856,043.26
  5. Step 5: Solve for x
    x = 668,856,043.26/40,574.60
  6. Step 6: Final answer
    x = 16,484.60

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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.