Home / 79,211.80-109,312.32-43,403.20

Finding the Fourth Proportional to 79,211.80, 109,312.32 and 43,403.20

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Solution

The fourth proportional to 79,211.80, 109,312.32 and 43,403.20 is: 59,896.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,211.80 : 109,312.32 = 43,403.20 : x
  2. Step 2: Convert to fraction form
    79,211.80/109,312.32 = 43,403.20/x
  3. Step 3: Cross multiply
    79,211.80x = 109,312.32 × 43,403.20
  4. Step 4: Simplify right side
    79,211.80x = 4,744,504,487.42
  5. Step 5: Solve for x
    x = 4,744,504,487.42/79,211.80
  6. Step 6: Final answer
    x = 59,896.44

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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.