Home / 78,348,546.60-117,522,819.90-47,692,444.20

Finding the Fourth Proportional to 78,348,546.60, 117,522,819.90 and 47,692,444.20

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Solution

The fourth proportional to 78,348,546.60, 117,522,819.90 and 47,692,444.20 is: 71,538,666.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,348,546.60 : 117,522,819.90 = 47,692,444.20 : x
  2. Step 2: Convert to fraction form
    78,348,546.60/117,522,819.90 = 47,692,444.20/x
  3. Step 3: Cross multiply
    78,348,546.60x = 117,522,819.90 × 47,692,444.20
  4. Step 4: Simplify right side
    78,348,546.60x = 5,604,950,530,307,400
  5. Step 5: Solve for x
    x = 5,604,950,530,307,400/78,348,546.60
  6. Step 6: Final answer
    x = 71,538,666.30

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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.