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Finding the Fourth Proportional to 68,270.67, 94,199.63 and 39,970.89

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Solution

The fourth proportional to 68,270.67, 94,199.63 and 39,970.89 is: 55,151.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,270.67 : 94,199.63 = 39,970.89 : x
  2. Step 2: Convert to fraction form
    68,270.67/94,199.63 = 39,970.89/x
  3. Step 3: Cross multiply
    68,270.67x = 94,199.63 × 39,970.89
  4. Step 4: Simplify right side
    68,270.67x = 3,765,242,848.92
  5. Step 5: Solve for x
    x = 3,765,242,848.92/68,270.67
  6. Step 6: Final answer
    x = 55,151.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.