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Finding the Fourth Proportional to 57,550,978.33, 79,421,418.87 and 31,447,186.90

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Solution

The fourth proportional to 57,550,978.33, 79,421,418.87 and 31,447,186.90 is: 43,397,701.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,550,978.33 : 79,421,418.87 = 31,447,186.90 : x
  2. Step 2: Convert to fraction form
    57,550,978.33/79,421,418.87 = 31,447,186.90/x
  3. Step 3: Cross multiply
    57,550,978.33x = 79,421,418.87 × 31,447,186.90
  4. Step 4: Simplify right side
    57,550,978.33x = 2,497,580,202,670,970
  5. Step 5: Solve for x
    x = 2,497,580,202,670,970/57,550,978.33
  6. Step 6: Final answer
    x = 43,397,701.92

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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.