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Finding the Fourth Proportional to 43,875.18, 65,819.79 and 14,290.74

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Solution

The fourth proportional to 43,875.18, 65,819.79 and 14,290.74 is: 21,438.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,875.18 : 65,819.79 = 14,290.74 : x
  2. Step 2: Convert to fraction form
    43,875.18/65,819.79 = 14,290.74/x
  3. Step 3: Cross multiply
    43,875.18x = 65,819.79 × 14,290.74
  4. Step 4: Simplify right side
    43,875.18x = 940,613,505.74
  5. Step 5: Solve for x
    x = 940,613,505.74/43,875.18
  6. Step 6: Final answer
    x = 21,438.40

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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.