Home / 72,427.10-108,659.55-28,055.30

Finding the Fourth Proportional to 72,427.10, 108,659.55 and 28,055.30

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Solution

The fourth proportional to 72,427.10, 108,659.55 and 28,055.30 is: 42,090.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,427.10 : 108,659.55 = 28,055.30 : x
  2. Step 2: Convert to fraction form
    72,427.10/108,659.55 = 28,055.30/x
  3. Step 3: Cross multiply
    72,427.10x = 108,659.55 × 28,055.30
  4. Step 4: Simplify right side
    72,427.10x = 3,048,476,273.12
  5. Step 5: Solve for x
    x = 3,048,476,273.12/72,427.10
  6. Step 6: Final answer
    x = 42,090.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.