Home / 78,261.32-107,998.74-42,450.44

Finding the Fourth Proportional to 78,261.32, 107,998.74 and 42,450.44

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Solution

The fourth proportional to 78,261.32, 107,998.74 and 42,450.44 is: 58,580.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,261.32 : 107,998.74 = 42,450.44 : x
  2. Step 2: Convert to fraction form
    78,261.32/107,998.74 = 42,450.44/x
  3. Step 3: Cross multiply
    78,261.32x = 107,998.74 × 42,450.44
  4. Step 4: Simplify right side
    78,261.32x = 4,584,594,032.45
  5. Step 5: Solve for x
    x = 4,584,594,032.45/78,261.32
  6. Step 6: Final answer
    x = 58,580.59

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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.