Home / 78,577,401.20-117,866,101.80-74,113,296.80

Finding the Fourth Proportional to 78,577,401.20, 117,866,101.80 and 74,113,296.80

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Solution

The fourth proportional to 78,577,401.20, 117,866,101.80 and 74,113,296.80 is: 111,169,945.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,577,401.20 : 117,866,101.80 = 74,113,296.80 : x
  2. Step 2: Convert to fraction form
    78,577,401.20/117,866,101.80 = 74,113,296.80/x
  3. Step 3: Cross multiply
    78,577,401.20x = 117,866,101.80 × 74,113,296.80
  4. Step 4: Simplify right side
    78,577,401.20x = 8,735,445,385,362,414
  5. Step 5: Solve for x
    x = 8,735,445,385,362,414/78,577,401.20
  6. Step 6: Final answer
    x = 111,169,945.20

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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.