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Finding the Fourth Proportional to 65,776.49, 98,673.44 and 21,388.28

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Solution

The fourth proportional to 65,776.49, 98,673.44 and 21,388.28 is: 32,085.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,776.49 : 98,673.44 = 21,388.28 : x
  2. Step 2: Convert to fraction form
    65,776.49/98,673.44 = 21,388.28/x
  3. Step 3: Cross multiply
    65,776.49x = 98,673.44 × 21,388.28
  4. Step 4: Simplify right side
    65,776.49x = 2,110,454,562.97
  5. Step 5: Solve for x
    x = 2,110,454,562.97/65,776.49
  6. Step 6: Final answer
    x = 32,085.24

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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.