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Finding the Fourth Proportional to 66,433,874.94, 91,661,457.87 and 38,917,040.94

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Solution

The fourth proportional to 66,433,874.94, 91,661,457.87 and 38,917,040.94 is: 53,695,388.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,433,874.94 : 91,661,457.87 = 38,917,040.94 : x
  2. Step 2: Convert to fraction form
    66,433,874.94/91,661,457.87 = 38,917,040.94/x
  3. Step 3: Cross multiply
    66,433,874.94x = 91,661,457.87 × 38,917,040.94
  4. Step 4: Simplify right side
    66,433,874.94x = 3,567,192,708,546,875
  5. Step 5: Solve for x
    x = 3,567,192,708,546,875/66,433,874.94
  6. Step 6: Final answer
    x = 53,695,388.26

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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.