Home / 68,068.40-102,102.62-28,086.80

Finding the Fourth Proportional to 68,068.40, 102,102.62 and 28,086.80

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Solution

The fourth proportional to 68,068.40, 102,102.62 and 28,086.80 is: 42,130.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,068.40 : 102,102.62 = 28,086.80 : x
  2. Step 2: Convert to fraction form
    68,068.40/102,102.62 = 28,086.80/x
  3. Step 3: Cross multiply
    68,068.40x = 102,102.62 × 28,086.80
  4. Step 4: Simplify right side
    68,068.40x = 2,867,735,216.47
  5. Step 5: Solve for x
    x = 2,867,735,216.47/68,068.40
  6. Step 6: Final answer
    x = 42,130.20

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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.