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Finding the Fourth Proportional to 79,157.68, 109,234.32 and 43,347.07

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Solution

The fourth proportional to 79,157.68, 109,234.32 and 43,347.07 is: 59,817.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,157.68 : 109,234.32 = 43,347.07 : x
  2. Step 2: Convert to fraction form
    79,157.68/109,234.32 = 43,347.07/x
  3. Step 3: Cross multiply
    79,157.68x = 109,234.32 × 43,347.07
  4. Step 4: Simplify right side
    79,157.68x = 4,734,987,771.79
  5. Step 5: Solve for x
    x = 4,734,987,771.79/79,157.68
  6. Step 6: Final answer
    x = 59,817.16

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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.