Home / 45,819.60-68,729.40-42,903.60

Finding the Fourth Proportional to 45,819.60, 68,729.40 and 42,903.60

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Solution

The fourth proportional to 45,819.60, 68,729.40 and 42,903.60 is: 64,355.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,819.60 : 68,729.40 = 42,903.60 : x
  2. Step 2: Convert to fraction form
    45,819.60/68,729.40 = 42,903.60/x
  3. Step 3: Cross multiply
    45,819.60x = 68,729.40 × 42,903.60
  4. Step 4: Simplify right side
    45,819.60x = 2,948,738,685.84
  5. Step 5: Solve for x
    x = 2,948,738,685.84/45,819.60
  6. Step 6: Final answer
    x = 64,355.40

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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.