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Finding the Fourth Proportional to 91,644.96, 126,471.57 and 53,403.63

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Solution

The fourth proportional to 91,644.96, 126,471.57 and 53,403.63 is: 73,697.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,644.96 : 126,471.57 = 53,403.63 : x
  2. Step 2: Convert to fraction form
    91,644.96/126,471.57 = 53,403.63/x
  3. Step 3: Cross multiply
    91,644.96x = 126,471.57 × 53,403.63
  4. Step 4: Simplify right side
    91,644.96x = 6,754,040,929.80
  5. Step 5: Solve for x
    x = 6,754,040,929.80/91,644.96
  6. Step 6: Final answer
    x = 73,697.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.