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Finding the Fourth Proportional to 99,855,605.20, 149,783,407.80 and 28,052,021.20

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Solution

The fourth proportional to 99,855,605.20, 149,783,407.80 and 28,052,021.20 is: 42,078,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,855,605.20 : 149,783,407.80 = 28,052,021.20 : x
  2. Step 2: Convert to fraction form
    99,855,605.20/149,783,407.80 = 28,052,021.20/x
  3. Step 3: Cross multiply
    99,855,605.20x = 149,783,407.80 × 28,052,021.20
  4. Step 4: Simplify right side
    99,855,605.20x = 4,201,727,331,013,845.50
  5. Step 5: Solve for x
    x = 4,201,727,331,013,845.50/99,855,605.20
  6. Step 6: Final answer
    x = 42,078,031.80

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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.