Home / 68,118.12-102,187.80-28,686.36

Finding the Fourth Proportional to 68,118.12, 102,187.80 and 28,686.36

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Solution

The fourth proportional to 68,118.12, 102,187.80 and 28,686.36 is: 43,034.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,118.12 : 102,187.80 = 28,686.36 : x
  2. Step 2: Convert to fraction form
    68,118.12/102,187.80 = 28,686.36/x
  3. Step 3: Cross multiply
    68,118.12x = 102,187.80 × 28,686.36
  4. Step 4: Simplify right side
    68,118.12x = 2,931,396,018.41
  5. Step 5: Solve for x
    x = 2,931,396,018.41/68,118.12
  6. Step 6: Final answer
    x = 43,034.01

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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.