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Finding the Fourth Proportional to 64,806.93, 97,201.15 and 20,427.91

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Solution

The fourth proportional to 64,806.93, 97,201.15 and 20,427.91 is: 30,638.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,806.93 : 97,201.15 = 20,427.91 : x
  2. Step 2: Convert to fraction form
    64,806.93/97,201.15 = 20,427.91/x
  3. Step 3: Cross multiply
    64,806.93x = 97,201.15 × 20,427.91
  4. Step 4: Simplify right side
    64,806.93x = 1,985,616,344.10
  5. Step 5: Solve for x
    x = 1,985,616,344.10/64,806.93
  6. Step 6: Final answer
    x = 30,638.95

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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.