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Finding the Fourth Proportional to 65,295.21, 97,928.93 and 20,910.05

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Solution

The fourth proportional to 65,295.21, 97,928.93 and 20,910.05 is: 31,360.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,295.21 : 97,928.93 = 20,910.05 : x
  2. Step 2: Convert to fraction form
    65,295.21/97,928.93 = 20,910.05/x
  3. Step 3: Cross multiply
    65,295.21x = 97,928.93 × 20,910.05
  4. Step 4: Simplify right side
    65,295.21x = 2,047,698,385.38
  5. Step 5: Solve for x
    x = 2,047,698,385.38/65,295.21
  6. Step 6: Final answer
    x = 31,360.62

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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.