Home / 42,378,889.20-63,442,362.60-28,018,172.40

Finding the Fourth Proportional to 42,378,889.20, 63,442,362.60 and 28,018,172.40

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Solution

The fourth proportional to 42,378,889.20, 63,442,362.60 and 28,018,172.40 is: 41,943,974.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,378,889.20 : 63,442,362.60 = 28,018,172.40 : x
  2. Step 2: Convert to fraction form
    42,378,889.20/63,442,362.60 = 28,018,172.40/x
  3. Step 3: Cross multiply
    42,378,889.20x = 63,442,362.60 × 28,018,172.40
  4. Step 4: Simplify right side
    42,378,889.20x = 1,777,539,052,790,112.25
  5. Step 5: Solve for x
    x = 1,777,539,052,790,112.25/42,378,889.20
  6. Step 6: Final answer
    x = 41,943,974.61

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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.