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Finding the Fourth Proportional to 28,073,243.20, 42,109,864.80 and 28,073,243.20

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Solution

The fourth proportional to 28,073,243.20, 42,109,864.80 and 28,073,243.20 is: 42,109,864.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,073,243.20 : 42,109,864.80 = 28,073,243.20 : x
  2. Step 2: Convert to fraction form
    28,073,243.20/42,109,864.80 = 28,073,243.20/x
  3. Step 3: Cross multiply
    28,073,243.20x = 42,109,864.80 × 28,073,243.20
  4. Step 4: Simplify right side
    28,073,243.20x = 1,182,160,475,649,519.25
  5. Step 5: Solve for x
    x = 1,182,160,475,649,519.25/28,073,243.20
  6. Step 6: Final answer
    x = 42,109,864.80

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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.