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Finding the Fourth Proportional to 65,912.54, 98,870.02 and 21,539.12

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Solution

The fourth proportional to 65,912.54, 98,870.02 and 21,539.12 is: 32,309.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,912.54 : 98,870.02 = 21,539.12 : x
  2. Step 2: Convert to fraction form
    65,912.54/98,870.02 = 21,539.12/x
  3. Step 3: Cross multiply
    65,912.54x = 98,870.02 × 21,539.12
  4. Step 4: Simplify right side
    65,912.54x = 2,129,572,676.98
  5. Step 5: Solve for x
    x = 2,129,572,676.98/65,912.54
  6. Step 6: Final answer
    x = 32,309.07

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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.