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Finding the Fourth Proportional to 68,379.54, 94,368.51 and 38,170.80

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Solution

The fourth proportional to 68,379.54, 94,368.51 and 38,170.80 is: 52,678.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,379.54 : 94,368.51 = 38,170.80 : x
  2. Step 2: Convert to fraction form
    68,379.54/94,368.51 = 38,170.80/x
  3. Step 3: Cross multiply
    68,379.54x = 94,368.51 × 38,170.80
  4. Step 4: Simplify right side
    68,379.54x = 3,602,121,521.51
  5. Step 5: Solve for x
    x = 3,602,121,521.51/68,379.54
  6. Step 6: Final answer
    x = 52,678.35

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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.