Home / 78,625.86-108,512.36-48,405.16

Finding the Fourth Proportional to 78,625.86, 108,512.36 and 48,405.16

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Solution

The fourth proportional to 78,625.86, 108,512.36 and 48,405.16 is: 66,804.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,625.86 : 108,512.36 = 48,405.16 : x
  2. Step 2: Convert to fraction form
    78,625.86/108,512.36 = 48,405.16/x
  3. Step 3: Cross multiply
    78,625.86x = 108,512.36 × 48,405.16
  4. Step 4: Simplify right side
    78,625.86x = 5,252,558,147.78
  5. Step 5: Solve for x
    x = 5,252,558,147.78/78,625.86
  6. Step 6: Final answer
    x = 66,804.46

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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.