Home / 45,905.60-68,858.40-31,908.80

Finding the Fourth Proportional to 45,905.60, 68,858.40 and 31,908.80

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Solution

The fourth proportional to 45,905.60, 68,858.40 and 31,908.80 is: 47,863.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,905.60 : 68,858.40 = 31,908.80 : x
  2. Step 2: Convert to fraction form
    45,905.60/68,858.40 = 31,908.80/x
  3. Step 3: Cross multiply
    45,905.60x = 68,858.40 × 31,908.80
  4. Step 4: Simplify right side
    45,905.60x = 2,197,188,913.92
  5. Step 5: Solve for x
    x = 2,197,188,913.92/45,905.60
  6. Step 6: Final answer
    x = 47,863.20

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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.