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Finding the Fourth Proportional to 101,609.44, 140,219.04 and 56,290.48

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Solution

The fourth proportional to 101,609.44, 140,219.04 and 56,290.48 is: 77,679.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,609.44 : 140,219.04 = 56,290.48 : x
  2. Step 2: Convert to fraction form
    101,609.44/140,219.04 = 56,290.48/x
  3. Step 3: Cross multiply
    101,609.44x = 140,219.04 × 56,290.48
  4. Step 4: Simplify right side
    101,609.44x = 7,892,997,066.74
  5. Step 5: Solve for x
    x = 7,892,997,066.74/101,609.44
  6. Step 6: Final answer
    x = 77,679.76

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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.