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Finding the Fourth Proportional to 43,417.89, 65,126.15 and 13,835.30

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Solution

The fourth proportional to 43,417.89, 65,126.15 and 13,835.30 is: 20,752.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,417.89 : 65,126.15 = 13,835.30 : x
  2. Step 2: Convert to fraction form
    43,417.89/65,126.15 = 13,835.30/x
  3. Step 3: Cross multiply
    43,417.89x = 65,126.15 × 13,835.30
  4. Step 4: Simplify right side
    43,417.89x = 901,039,916.73
  5. Step 5: Solve for x
    x = 901,039,916.73/43,417.89
  6. Step 6: Final answer
    x = 20,752.73

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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.