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Finding the Fourth Proportional to 64,940.28, 97,410.42 and 53,130.48

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Solution

The fourth proportional to 64,940.28, 97,410.42 and 53,130.48 is: 79,695.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,940.28 : 97,410.42 = 53,130.48 : x
  2. Step 2: Convert to fraction form
    64,940.28/97,410.42 = 53,130.48/x
  3. Step 3: Cross multiply
    64,940.28x = 97,410.42 × 53,130.48
  4. Step 4: Simplify right side
    64,940.28x = 5,175,462,371.60
  5. Step 5: Solve for x
    x = 5,175,462,371.60/64,940.28
  6. Step 6: Final answer
    x = 79,695.72

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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.