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Finding the Fourth Proportional to 79,110.75, 109,172.84 and 43,782.75

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Solution

The fourth proportional to 79,110.75, 109,172.84 and 43,782.75 is: 60,420.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,110.75 : 109,172.84 = 43,782.75 : x
  2. Step 2: Convert to fraction form
    79,110.75/109,172.84 = 43,782.75/x
  3. Step 3: Cross multiply
    79,110.75x = 109,172.84 × 43,782.75
  4. Step 4: Simplify right side
    79,110.75x = 4,779,886,941.60
  5. Step 5: Solve for x
    x = 4,779,886,941.60/79,110.75
  6. Step 6: Final answer
    x = 60,420.20

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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.