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Finding the Fourth Proportional to 28,230,956.80, 42,251,956.80 and 19,727,900.80

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Solution

The fourth proportional to 28,230,956.80, 42,251,956.80 and 19,727,900.80 is: 29,525,829.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,230,956.80 : 42,251,956.80 = 19,727,900.80 : x
  2. Step 2: Convert to fraction form
    28,230,956.80/42,251,956.80 = 19,727,900.80/x
  3. Step 3: Cross multiply
    28,230,956.80x = 42,251,956.80 × 19,727,900.80
  4. Step 4: Simplify right side
    28,230,956.80x = 833,542,412,356,285.38
  5. Step 5: Solve for x
    x = 833,542,412,356,285.38/28,230,956.80
  6. Step 6: Final answer
    x = 29,525,829.33

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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.