Home / 78,725.56-108,643.48-48,103.64

Finding the Fourth Proportional to 78,725.56, 108,643.48 and 48,103.64

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Solution

The fourth proportional to 78,725.56, 108,643.48 and 48,103.64 is: 66,384.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725.56 : 108,643.48 = 48,103.64 : x
  2. Step 2: Convert to fraction form
    78,725.56/108,643.48 = 48,103.64/x
  3. Step 3: Cross multiply
    78,725.56x = 108,643.48 × 48,103.64
  4. Step 4: Simplify right side
    78,725.56x = 5,226,146,850.27
  5. Step 5: Solve for x
    x = 5,226,146,850.27/78,725.56
  6. Step 6: Final answer
    x = 66,384.37

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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.