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Finding the Fourth Proportional to 65,006.41, 97,521.72 and 20,621.20

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Solution

The fourth proportional to 65,006.41, 97,521.72 and 20,621.20 is: 30,935.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,006.41 : 97,521.72 = 20,621.20 : x
  2. Step 2: Convert to fraction form
    65,006.41/97,521.72 = 20,621.20/x
  3. Step 3: Cross multiply
    65,006.41x = 97,521.72 × 20,621.20
  4. Step 4: Simplify right side
    65,006.41x = 2,011,014,892.46
  5. Step 5: Solve for x
    x = 2,011,014,892.46/65,006.41
  6. Step 6: Final answer
    x = 30,935.64

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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.