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Finding the Fourth Proportional to 43,875.72, 65,820.42 and 14,286.68

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Solution

The fourth proportional to 43,875.72, 65,820.42 and 14,286.68 is: 21,432.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,875.72 : 65,820.42 = 14,286.68 : x
  2. Step 2: Convert to fraction form
    43,875.72/65,820.42 = 14,286.68/x
  3. Step 3: Cross multiply
    43,875.72x = 65,820.42 × 14,286.68
  4. Step 4: Simplify right side
    43,875.72x = 940,354,913.19
  5. Step 5: Solve for x
    x = 940,354,913.19/43,875.72
  6. Step 6: Final answer
    x = 21,432.24

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1.5x scale

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.