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Finding the Fourth Proportional to 65,130.60, 97,694.07 and 20,760.01

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Solution

The fourth proportional to 65,130.60, 97,694.07 and 20,760.01 is: 31,139.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,130.60 : 97,694.07 = 20,760.01 : x
  2. Step 2: Convert to fraction form
    65,130.60/97,694.07 = 20,760.01/x
  3. Step 3: Cross multiply
    65,130.60x = 97,694.07 × 20,760.01
  4. Step 4: Simplify right side
    65,130.60x = 2,028,129,870.14
  5. Step 5: Solve for x
    x = 2,028,129,870.14/65,130.60
  6. Step 6: Final answer
    x = 31,139.43

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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.