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Finding the Fourth Proportional to 53,161,728.80, 79,648,114.80 and 45,603,456.80

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Solution

The fourth proportional to 53,161,728.80, 79,648,114.80 and 45,603,456.80 is: 68,324,139.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,161,728.80 : 79,648,114.80 = 45,603,456.80 : x
  2. Step 2: Convert to fraction form
    53,161,728.80/79,648,114.80 = 45,603,456.80/x
  3. Step 3: Cross multiply
    53,161,728.80x = 79,648,114.80 × 45,603,456.80
  4. Step 4: Simplify right side
    53,161,728.80x = 3,632,229,362,483,240.50
  5. Step 5: Solve for x
    x = 3,632,229,362,483,240.50/53,161,728.80
  6. Step 6: Final answer
    x = 68,324,139.27

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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.