Home / 52,121.54-78,290.64-42,137.58

Finding the Fourth Proportional to 52,121.54, 78,290.64 and 42,137.58

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Solution

The fourth proportional to 52,121.54, 78,290.64 and 42,137.58 is: 63,293.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,121.54 : 78,290.64 = 42,137.58 : x
  2. Step 2: Convert to fraction form
    52,121.54/78,290.64 = 42,137.58/x
  3. Step 3: Cross multiply
    52,121.54x = 78,290.64 × 42,137.58
  4. Step 4: Simplify right side
    52,121.54x = 3,298,978,106.25
  5. Step 5: Solve for x
    x = 3,298,978,106.25/52,121.54
  6. Step 6: Final answer
    x = 63,293.96

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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.