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Finding the Fourth Proportional to 68,406.82, 94,403 and 42,914.28

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Solution

The fourth proportional to 68,406.82, 94,403 and 42,914.28 is: 59,222.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,406.82 : 94,403 = 42,914.28 : x
  2. Step 2: Convert to fraction form
    68,406.82/94,403 = 42,914.28/x
  3. Step 3: Cross multiply
    68,406.82x = 94,403 × 42,914.28
  4. Step 4: Simplify right side
    68,406.82x = 4,051,236,774.84
  5. Step 5: Solve for x
    x = 4,051,236,774.84/68,406.82
  6. Step 6: Final answer
    x = 59,222.70

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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.