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Finding the Fourth Proportional to 65,109.52, 97,631.97 and 20,730.49

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Solution

The fourth proportional to 65,109.52, 97,631.97 and 20,730.49 is: 31,085.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,109.52 : 97,631.97 = 20,730.49 : x
  2. Step 2: Convert to fraction form
    65,109.52/97,631.97 = 20,730.49/x
  3. Step 3: Cross multiply
    65,109.52x = 97,631.97 × 20,730.49
  4. Step 4: Simplify right side
    65,109.52x = 2,023,958,577.77
  5. Step 5: Solve for x
    x = 2,023,958,577.77/65,109.52
  6. Step 6: Final answer
    x = 31,085.45

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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.