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Finding the Fourth Proportional to 28,029,138.30, 42,043,707.45 and 28,029,138.30

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Solution

The fourth proportional to 28,029,138.30, 42,043,707.45 and 28,029,138.30 is: 42,043,707.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,029,138.30 : 42,043,707.45 = 28,029,138.30 : x
  2. Step 2: Convert to fraction form
    28,029,138.30/42,043,707.45 = 28,029,138.30/x
  3. Step 3: Cross multiply
    28,029,138.30x = 42,043,707.45 × 28,029,138.30
  4. Step 4: Simplify right side
    28,029,138.30x = 1,178,448,890,760,790.50
  5. Step 5: Solve for x
    x = 1,178,448,890,760,790.50/28,029,138.30
  6. Step 6: Final answer
    x = 42,043,707.45

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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.