Home / 66,125.61-91,261.67-40,978.89

Finding the Fourth Proportional to 66,125.61, 91,261.67 and 40,978.89

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Solution

The fourth proportional to 66,125.61, 91,261.67 and 40,978.89 is: 56,556.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,125.61 : 91,261.67 = 40,978.89 : x
  2. Step 2: Convert to fraction form
    66,125.61/91,261.67 = 40,978.89/x
  3. Step 3: Cross multiply
    66,125.61x = 91,261.67 × 40,978.89
  4. Step 4: Simplify right side
    66,125.61x = 3,739,801,936.15
  5. Step 5: Solve for x
    x = 3,739,801,936.15/66,125.61
  6. Step 6: Final answer
    x = 56,556.03

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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.