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Finding the Fourth Proportional to 47,051.40, 70,577.10 and 20,728.20

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Solution

The fourth proportional to 47,051.40, 70,577.10 and 20,728.20 is: 31,092.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,051.40 : 70,577.10 = 20,728.20 : x
  2. Step 2: Convert to fraction form
    47,051.40/70,577.10 = 20,728.20/x
  3. Step 3: Cross multiply
    47,051.40x = 70,577.10 × 20,728.20
  4. Step 4: Simplify right side
    47,051.40x = 1,462,936,244.22
  5. Step 5: Solve for x
    x = 1,462,936,244.22/47,051.40
  6. Step 6: Final answer
    x = 31,092.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.