Home / 78,442.76-117,670.20-47,066.60

Finding the Fourth Proportional to 78,442.76, 117,670.20 and 47,066.60

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Solution

The fourth proportional to 78,442.76, 117,670.20 and 47,066.60 is: 70,603.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,442.76 : 117,670.20 = 47,066.60 : x
  2. Step 2: Convert to fraction form
    78,442.76/117,670.20 = 47,066.60/x
  3. Step 3: Cross multiply
    78,442.76x = 117,670.20 × 47,066.60
  4. Step 4: Simplify right side
    78,442.76x = 5,538,336,235.32
  5. Step 5: Solve for x
    x = 5,538,336,235.32/78,442.76
  6. Step 6: Final answer
    x = 70,603.54

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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.