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Finding the Fourth Proportional to 68,728.40, 96,012.40 and 68,728.40

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Solution

The fourth proportional to 68,728.40, 96,012.40 and 68,728.40 is: 96,012.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,728.40 : 96,012.40 = 68,728.40 : x
  2. Step 2: Convert to fraction form
    68,728.40/96,012.40 = 68,728.40/x
  3. Step 3: Cross multiply
    68,728.40x = 96,012.40 × 68,728.40
  4. Step 4: Simplify right side
    68,728.40x = 6,598,778,632.16
  5. Step 5: Solve for x
    x = 6,598,778,632.16/68,728.40
  6. Step 6: Final answer
    x = 96,012.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.