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Finding the Fourth Proportional to 43,898.90, 65,858.84 and 14,316.78

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Solution

The fourth proportional to 43,898.90, 65,858.84 and 14,316.78 is: 21,478.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,898.90 : 65,858.84 = 14,316.78 : x
  2. Step 2: Convert to fraction form
    43,898.90/65,858.84 = 14,316.78/x
  3. Step 3: Cross multiply
    43,898.90x = 65,858.84 × 14,316.78
  4. Step 4: Simplify right side
    43,898.90x = 942,886,451.75
  5. Step 5: Solve for x
    x = 942,886,451.75/43,898.90
  6. Step 6: Final answer
    x = 21,478.59

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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.