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Finding the Fourth Proportional to 68,220, 94,146.44 and 38,005.34

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Solution

The fourth proportional to 68,220, 94,146.44 and 38,005.34 is: 52,448.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,220 : 94,146.44 = 38,005.34 : x
  2. Step 2: Convert to fraction form
    68,220/94,146.44 = 38,005.34/x
  3. Step 3: Cross multiply
    68,220x = 94,146.44 × 38,005.34
  4. Step 4: Simplify right side
    68,220x = 3,578,066,801.23
  5. Step 5: Solve for x
    x = 3,578,066,801.23/68,220
  6. Step 6: Final answer
    x = 52,448.94

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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.