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Finding the Fourth Proportional to 66,131.40, 99,051.30 and 58,744.20

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Solution

The fourth proportional to 66,131.40, 99,051.30 and 58,744.20 is: 87,986.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,131.40 : 99,051.30 = 58,744.20 : x
  2. Step 2: Convert to fraction form
    66,131.40/99,051.30 = 58,744.20/x
  3. Step 3: Cross multiply
    66,131.40x = 99,051.30 × 58,744.20
  4. Step 4: Simplify right side
    66,131.40x = 5,818,689,377.46
  5. Step 5: Solve for x
    x = 5,818,689,377.46/66,131.40
  6. Step 6: Final answer
    x = 87,986.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.