Home / 57,090.56-78,785.06-31,940.08

Finding the Fourth Proportional to 57,090.56, 78,785.06 and 31,940.08

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Solution

The fourth proportional to 57,090.56, 78,785.06 and 31,940.08 is: 44,077.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,090.56 : 78,785.06 = 31,940.08 : x
  2. Step 2: Convert to fraction form
    57,090.56/78,785.06 = 31,940.08/x
  3. Step 3: Cross multiply
    57,090.56x = 78,785.06 × 31,940.08
  4. Step 4: Simplify right side
    57,090.56x = 2,516,401,119.20
  5. Step 5: Solve for x
    x = 2,516,401,119.20/57,090.56
  6. Step 6: Final answer
    x = 44,077.36

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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.