Home / 68,087.60-102,131.34-20,703.08

Finding the Fourth Proportional to 68,087.60, 102,131.34 and 20,703.08

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Solution

The fourth proportional to 68,087.60, 102,131.34 and 20,703.08 is: 31,054.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,087.60 : 102,131.34 = 20,703.08 : x
  2. Step 2: Convert to fraction form
    68,087.60/102,131.34 = 20,703.08/x
  3. Step 3: Cross multiply
    68,087.60x = 102,131.34 × 20,703.08
  4. Step 4: Simplify right side
    68,087.60x = 2,114,433,302.53
  5. Step 5: Solve for x
    x = 2,114,433,302.53/68,087.60
  6. Step 6: Final answer
    x = 31,054.60

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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.