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Finding the Fourth Proportional to 65,040.88, 97,551.10 and 20,661.80

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Solution

The fourth proportional to 65,040.88, 97,551.10 and 20,661.80 is: 30,989.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,040.88 : 97,551.10 = 20,661.80 : x
  2. Step 2: Convert to fraction form
    65,040.88/97,551.10 = 20,661.80/x
  3. Step 3: Cross multiply
    65,040.88x = 97,551.10 × 20,661.80
  4. Step 4: Simplify right side
    65,040.88x = 2,015,581,317.98
  5. Step 5: Solve for x
    x = 2,015,581,317.98/65,040.88
  6. Step 6: Final answer
    x = 30,989.45

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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.