Home / 45,905.60-68,761.20-40,980.80

Finding the Fourth Proportional to 45,905.60, 68,761.20 and 40,980.80

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Solution

The fourth proportional to 45,905.60, 68,761.20 and 40,980.80 is: 61,384.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,905.60 : 68,761.20 = 40,980.80 : x
  2. Step 2: Convert to fraction form
    45,905.60/68,761.20 = 40,980.80/x
  3. Step 3: Cross multiply
    45,905.60x = 68,761.20 × 40,980.80
  4. Step 4: Simplify right side
    45,905.60x = 2,817,888,984.96
  5. Step 5: Solve for x
    x = 2,817,888,984.96/45,905.60
  6. Step 6: Final answer
    x = 61,384.43

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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.