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Finding the Fourth Proportional to 70,734.40, 97,608.72 and 40,519.84

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Solution

The fourth proportional to 70,734.40, 97,608.72 and 40,519.84 is: 55,914.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,734.40 : 97,608.72 = 40,519.84 : x
  2. Step 2: Convert to fraction form
    70,734.40/97,608.72 = 40,519.84/x
  3. Step 3: Cross multiply
    70,734.40x = 97,608.72 × 40,519.84
  4. Step 4: Simplify right side
    70,734.40x = 3,955,089,717.00
  5. Step 5: Solve for x
    x = 3,955,089,717.00/70,734.40
  6. Step 6: Final answer
    x = 55,914.66

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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.