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Finding the Fourth Proportional to 43,946.86, 65,865.46 and 21,438.99

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Solution

The fourth proportional to 43,946.86, 65,865.46 and 21,438.99 is: 32,131.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,946.86 : 65,865.46 = 21,438.99 : x
  2. Step 2: Convert to fraction form
    43,946.86/65,865.46 = 21,438.99/x
  3. Step 3: Cross multiply
    43,946.86x = 65,865.46 × 21,438.99
  4. Step 4: Simplify right side
    43,946.86x = 1,412,088,938.29
  5. Step 5: Solve for x
    x = 1,412,088,938.29/43,946.86
  6. Step 6: Final answer
    x = 32,131.74

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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.