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Finding the Fourth Proportional to 83,379.48, 115,069.74 and 47,570.28

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Solution

The fourth proportional to 83,379.48, 115,069.74 and 47,570.28 is: 65,650.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,379.48 : 115,069.74 = 47,570.28 : x
  2. Step 2: Convert to fraction form
    83,379.48/115,069.74 = 47,570.28/x
  3. Step 3: Cross multiply
    83,379.48x = 115,069.74 × 47,570.28
  4. Step 4: Simplify right side
    83,379.48x = 5,473,899,751.33
  5. Step 5: Solve for x
    x = 5,473,899,751.33/83,379.48
  6. Step 6: Final answer
    x = 65,650.44

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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.