Home / 78,597.56-117,874.38-31,191.32

Finding the Fourth Proportional to 78,597.56, 117,874.38 and 31,191.32

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Solution

The fourth proportional to 78,597.56, 117,874.38 and 31,191.32 is: 46,778.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,597.56 : 117,874.38 = 31,191.32 : x
  2. Step 2: Convert to fraction form
    78,597.56/117,874.38 = 31,191.32/x
  3. Step 3: Cross multiply
    78,597.56x = 117,874.38 × 31,191.32
  4. Step 4: Simplify right side
    78,597.56x = 3,676,657,506.38
  5. Step 5: Solve for x
    x = 3,676,657,506.38/78,597.56
  6. Step 6: Final answer
    x = 46,778.27

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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.