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Finding the Fourth Proportional to 74,661,489.80, 103,032,832.50 and 40,322,673.80

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Solution

The fourth proportional to 74,661,489.80, 103,032,832.50 and 40,322,673.80 is: 55,645,277.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,661,489.80 : 103,032,832.50 = 40,322,673.80 : x
  2. Step 2: Convert to fraction form
    74,661,489.80/103,032,832.50 = 40,322,673.80/x
  3. Step 3: Cross multiply
    74,661,489.80x = 103,032,832.50 × 40,322,673.80
  4. Step 4: Simplify right side
    74,661,489.80x = 4,154,559,295,587,538
  5. Step 5: Solve for x
    x = 4,154,559,295,587,538/74,661,489.80
  6. Step 6: Final answer
    x = 55,645,277.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.