Home / 78,090.56-117,126.12-25,495.64

Finding the Fourth Proportional to 78,090.56, 117,126.12 and 25,495.64

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Solution

The fourth proportional to 78,090.56, 117,126.12 and 25,495.64 is: 38,240.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,090.56 : 117,126.12 = 25,495.64 : x
  2. Step 2: Convert to fraction form
    78,090.56/117,126.12 = 25,495.64/x
  3. Step 3: Cross multiply
    78,090.56x = 117,126.12 × 25,495.64
  4. Step 4: Simplify right side
    78,090.56x = 2,986,205,390.12
  5. Step 5: Solve for x
    x = 2,986,205,390.12/78,090.56
  6. Step 6: Final answer
    x = 38,240.29

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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.