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Finding the Fourth Proportional to 65,863.56, 98,795.40 and 21,490.20

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Solution

The fourth proportional to 65,863.56, 98,795.40 and 21,490.20 is: 32,235.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,863.56 : 98,795.40 = 21,490.20 : x
  2. Step 2: Convert to fraction form
    65,863.56/98,795.40 = 21,490.20/x
  3. Step 3: Cross multiply
    65,863.56x = 98,795.40 × 21,490.20
  4. Step 4: Simplify right side
    65,863.56x = 2,123,132,905.08
  5. Step 5: Solve for x
    x = 2,123,132,905.08/65,863.56
  6. Step 6: Final answer
    x = 32,235.32

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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.