Home / 28,662,639.69-42,990,739.85-7,916,027.20

Finding the Fourth Proportional to 28,662,639.69, 42,990,739.85 and 7,916,027.20

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Solution

The fourth proportional to 28,662,639.69, 42,990,739.85 and 7,916,027.20 is: 11,873,151.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,662,639.69 : 42,990,739.85 = 7,916,027.20 : x
  2. Step 2: Convert to fraction form
    28,662,639.69/42,990,739.85 = 7,916,027.20/x
  3. Step 3: Cross multiply
    28,662,639.69x = 42,990,739.85 × 7,916,027.20
  4. Step 4: Simplify right side
    28,662,639.69x = 340,315,865,822,907.06
  5. Step 5: Solve for x
    x = 340,315,865,822,907.06/28,662,639.69
  6. Step 6: Final answer
    x = 11,873,151.58

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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.