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Finding the Fourth Proportional to 70,991.44, 97,968.28 and 40,782.60

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Solution

The fourth proportional to 70,991.44, 97,968.28 and 40,782.60 is: 56,280.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,991.44 : 97,968.28 = 40,782.60 : x
  2. Step 2: Convert to fraction form
    70,991.44/97,968.28 = 40,782.60/x
  3. Step 3: Cross multiply
    70,991.44x = 97,968.28 × 40,782.60
  4. Step 4: Simplify right side
    70,991.44x = 3,995,401,175.93
  5. Step 5: Solve for x
    x = 3,995,401,175.93/70,991.44
  6. Step 6: Final answer
    x = 56,280.04

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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.