Home / 68,000.64-102,015.36-21,257.04

Finding the Fourth Proportional to 68,000.64, 102,015.36 and 21,257.04

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Solution

The fourth proportional to 68,000.64, 102,015.36 and 21,257.04 is: 31,890.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,000.64 : 102,015.36 = 21,257.04 : x
  2. Step 2: Convert to fraction form
    68,000.64/102,015.36 = 21,257.04/x
  3. Step 3: Cross multiply
    68,000.64x = 102,015.36 × 21,257.04
  4. Step 4: Simplify right side
    68,000.64x = 2,168,544,588.13
  5. Step 5: Solve for x
    x = 2,168,544,588.13/68,000.64
  6. Step 6: Final answer
    x = 31,890.06

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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.