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Finding the Fourth Proportional to 65,243.88, 97,838.28 and 20,259.72

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Solution

The fourth proportional to 65,243.88, 97,838.28 and 20,259.72 is: 30,381.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,243.88 : 97,838.28 = 20,259.72 : x
  2. Step 2: Convert to fraction form
    65,243.88/97,838.28 = 20,259.72/x
  3. Step 3: Cross multiply
    65,243.88x = 97,838.28 × 20,259.72
  4. Step 4: Simplify right side
    65,243.88x = 1,982,176,158.08
  5. Step 5: Solve for x
    x = 1,982,176,158.08/65,243.88
  6. Step 6: Final answer
    x = 30,381.03

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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.