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Finding the Fourth Proportional to 65,506.88, 90,414.08 and 41,628.89

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Solution

The fourth proportional to 65,506.88, 90,414.08 and 41,628.89 is: 57,457.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,506.88 : 90,414.08 = 41,628.89 : x
  2. Step 2: Convert to fraction form
    65,506.88/90,414.08 = 41,628.89/x
  3. Step 3: Cross multiply
    65,506.88x = 90,414.08 × 41,628.89
  4. Step 4: Simplify right side
    65,506.88x = 3,763,837,130.56
  5. Step 5: Solve for x
    x = 3,763,837,130.56/65,506.88
  6. Step 6: Final answer
    x = 57,457.13

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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.