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Finding the Fourth Proportional to 65,427.92, 98,145.16 and 18,687.68

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Solution

The fourth proportional to 65,427.92, 98,145.16 and 18,687.68 is: 28,032.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,427.92 : 98,145.16 = 18,687.68 : x
  2. Step 2: Convert to fraction form
    65,427.92/98,145.16 = 18,687.68/x
  3. Step 3: Cross multiply
    65,427.92x = 98,145.16 × 18,687.68
  4. Step 4: Simplify right side
    65,427.92x = 1,834,105,343.63
  5. Step 5: Solve for x
    x = 1,834,105,343.63/65,427.92
  6. Step 6: Final answer
    x = 28,032.46

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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.