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Finding the Fourth Proportional to 60,992,660.80, 91,405,010.40 and 40,464,020.80

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Solution

The fourth proportional to 60,992,660.80, 91,405,010.40 and 40,464,020.80 is: 60,640,316.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,992,660.80 : 91,405,010.40 = 40,464,020.80 : x
  2. Step 2: Convert to fraction form
    60,992,660.80/91,405,010.40 = 40,464,020.80/x
  3. Step 3: Cross multiply
    60,992,660.80x = 91,405,010.40 × 40,464,020.80
  4. Step 4: Simplify right side
    60,992,660.80x = 3,698,614,242,049,816.50
  5. Step 5: Solve for x
    x = 3,698,614,242,049,816.50/60,992,660.80
  6. Step 6: Final answer
    x = 60,640,316.29

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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.