Home / 68,358.48-102,538.36-21,611.60

Finding the Fourth Proportional to 68,358.48, 102,538.36 and 21,611.60

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Solution

The fourth proportional to 68,358.48, 102,538.36 and 21,611.60 is: 32,417.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,358.48 : 102,538.36 = 21,611.60 : x
  2. Step 2: Convert to fraction form
    68,358.48/102,538.36 = 21,611.60/x
  3. Step 3: Cross multiply
    68,358.48x = 102,538.36 × 21,611.60
  4. Step 4: Simplify right side
    68,358.48x = 2,216,018,020.98
  5. Step 5: Solve for x
    x = 2,216,018,020.98/68,358.48
  6. Step 6: Final answer
    x = 32,417.60

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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.