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Finding the Fourth Proportional to 64,861.20, 97,138.20 and 43,971.60

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Solution

The fourth proportional to 64,861.20, 97,138.20 and 43,971.60 is: 65,853.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,861.20 : 97,138.20 = 43,971.60 : x
  2. Step 2: Convert to fraction form
    64,861.20/97,138.20 = 43,971.60/x
  3. Step 3: Cross multiply
    64,861.20x = 97,138.20 × 43,971.60
  4. Step 4: Simplify right side
    64,861.20x = 4,271,322,075.12
  5. Step 5: Solve for x
    x = 4,271,322,075.12/64,861.20
  6. Step 6: Final answer
    x = 65,853.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.