Home / 68,027.60-102,048.12-21,281.36

Finding the Fourth Proportional to 68,027.60, 102,048.12 and 21,281.36

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Solution

The fourth proportional to 68,027.60, 102,048.12 and 21,281.36 is: 31,924.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,027.60 : 102,048.12 = 21,281.36 : x
  2. Step 2: Convert to fraction form
    68,027.60/102,048.12 = 21,281.36/x
  3. Step 3: Cross multiply
    68,027.60x = 102,048.12 × 21,281.36
  4. Step 4: Simplify right side
    68,027.60x = 2,171,722,779.04
  5. Step 5: Solve for x
    x = 2,171,722,779.04/68,027.60
  6. Step 6: Final answer
    x = 31,924.14

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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.