Home / 78,280,018.80-117,420,028.20-49,369,628.40

Finding the Fourth Proportional to 78,280,018.80, 117,420,028.20 and 49,369,628.40

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Solution

The fourth proportional to 78,280,018.80, 117,420,028.20 and 49,369,628.40 is: 74,054,442.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,280,018.80 : 117,420,028.20 = 49,369,628.40 : x
  2. Step 2: Convert to fraction form
    78,280,018.80/117,420,028.20 = 49,369,628.40/x
  3. Step 3: Cross multiply
    78,280,018.80x = 117,420,028.20 × 49,369,628.40
  4. Step 4: Simplify right side
    78,280,018.80x = 5,796,983,158,951,521
  5. Step 5: Solve for x
    x = 5,796,983,158,951,521/78,280,018.80
  6. Step 6: Final answer
    x = 74,054,442.60

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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.