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Finding the Fourth Proportional to 28,979,735.70, 43,469,603.55 and 15,542,807.70

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Solution

The fourth proportional to 28,979,735.70, 43,469,603.55 and 15,542,807.70 is: 23,314,211.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979,735.70 : 43,469,603.55 = 15,542,807.70 : x
  2. Step 2: Convert to fraction form
    28,979,735.70/43,469,603.55 = 15,542,807.70/x
  3. Step 3: Cross multiply
    28,979,735.70x = 43,469,603.55 × 15,542,807.70
  4. Step 4: Simplify right side
    28,979,735.70x = 675,639,688,772,887.25
  5. Step 5: Solve for x
    x = 675,639,688,772,887.25/28,979,735.70
  6. Step 6: Final answer
    x = 23,314,211.55

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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.