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Finding the Fourth Proportional to 68,157.90, 94,071.42 and 39,482.28

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Solution

The fourth proportional to 68,157.90, 94,071.42 and 39,482.28 is: 54,493.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,157.90 : 94,071.42 = 39,482.28 : x
  2. Step 2: Convert to fraction form
    68,157.90/94,071.42 = 39,482.28/x
  3. Step 3: Cross multiply
    68,157.90x = 94,071.42 × 39,482.28
  4. Step 4: Simplify right side
    68,157.90x = 3,714,154,144.44
  5. Step 5: Solve for x
    x = 3,714,154,144.44/68,157.90
  6. Step 6: Final answer
    x = 54,493.38

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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.