Home / 78,258.55-117,291.63-36,080.09

Finding the Fourth Proportional to 78,258.55, 117,291.63 and 36,080.09

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Solution

The fourth proportional to 78,258.55, 117,291.63 and 36,080.09 is: 54,075.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,258.55 : 117,291.63 = 36,080.09 : x
  2. Step 2: Convert to fraction form
    78,258.55/117,291.63 = 36,080.09/x
  3. Step 3: Cross multiply
    78,258.55x = 117,291.63 × 36,080.09
  4. Step 4: Simplify right side
    78,258.55x = 4,231,892,352.38
  5. Step 5: Solve for x
    x = 4,231,892,352.38/78,258.55
  6. Step 6: Final answer
    x = 54,075.78

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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.