Home / 78,427.96-108,186.78-48,192.28

Finding the Fourth Proportional to 78,427.96, 108,186.78 and 48,192.28

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Solution

The fourth proportional to 78,427.96, 108,186.78 and 48,192.28 is: 66,478.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,427.96 : 108,186.78 = 48,192.28 : x
  2. Step 2: Convert to fraction form
    78,427.96/108,186.78 = 48,192.28/x
  3. Step 3: Cross multiply
    78,427.96x = 108,186.78 × 48,192.28
  4. Step 4: Simplify right side
    78,427.96x = 5,213,767,594.06
  5. Step 5: Solve for x
    x = 5,213,767,594.06/78,427.96
  6. Step 6: Final answer
    x = 66,478.43

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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.