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Finding the Fourth Proportional to 64,962.40, 97,227.60 and 47,142.40

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Solution

The fourth proportional to 64,962.40, 97,227.60 and 47,142.40 is: 70,556.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,962.40 : 97,227.60 = 47,142.40 : x
  2. Step 2: Convert to fraction form
    64,962.40/97,227.60 = 47,142.40/x
  3. Step 3: Cross multiply
    64,962.40x = 97,227.60 × 47,142.40
  4. Step 4: Simplify right side
    64,962.40x = 4,583,542,410.24
  5. Step 5: Solve for x
    x = 4,583,542,410.24/64,962.40
  6. Step 6: Final answer
    x = 70,556.85

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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.