Home / 77,627.40-107,090.64-45,781.44

Finding the Fourth Proportional to 77,627.40, 107,090.64 and 45,781.44

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Solution

The fourth proportional to 77,627.40, 107,090.64 and 45,781.44 is: 63,157.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,627.40 : 107,090.64 = 45,781.44 : x
  2. Step 2: Convert to fraction form
    77,627.40/107,090.64 = 45,781.44/x
  3. Step 3: Cross multiply
    77,627.40x = 107,090.64 × 45,781.44
  4. Step 4: Simplify right side
    77,627.40x = 4,902,763,709.72
  5. Step 5: Solve for x
    x = 4,902,763,709.72/77,627.40
  6. Step 6: Final answer
    x = 63,157.64

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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.