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Finding the Fourth Proportional to 66,060.82, 91,130.02 and 41,820.67

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Solution

The fourth proportional to 66,060.82, 91,130.02 and 41,820.67 is: 57,691.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,060.82 : 91,130.02 = 41,820.67 : x
  2. Step 2: Convert to fraction form
    66,060.82/91,130.02 = 41,820.67/x
  3. Step 3: Cross multiply
    66,060.82x = 91,130.02 × 41,820.67
  4. Step 4: Simplify right side
    66,060.82x = 3,811,118,493.51
  5. Step 5: Solve for x
    x = 3,811,118,493.51/66,060.82
  6. Step 6: Final answer
    x = 57,691.06

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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.