Home / 45,400.60-68,122.86-20,458.36

Finding the Fourth Proportional to 45,400.60, 68,122.86 and 20,458.36

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Solution

The fourth proportional to 45,400.60, 68,122.86 and 20,458.36 is: 30,697.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,400.60 : 68,122.86 = 20,458.36 : x
  2. Step 2: Convert to fraction form
    45,400.60/68,122.86 = 20,458.36/x
  3. Step 3: Cross multiply
    45,400.60x = 68,122.86 × 20,458.36
  4. Step 4: Simplify right side
    45,400.60x = 1,393,681,994.11
  5. Step 5: Solve for x
    x = 1,393,681,994.11/45,400.60
  6. Step 6: Final answer
    x = 30,697.44

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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.