Home / 68,141,380.80-102,212,071.20-40,931,601.60

Finding the Fourth Proportional to 68,141,380.80, 102,212,071.20 and 40,931,601.60

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Solution

The fourth proportional to 68,141,380.80, 102,212,071.20 and 40,931,601.60 is: 61,397,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,141,380.80 : 102,212,071.20 = 40,931,601.60 : x
  2. Step 2: Convert to fraction form
    68,141,380.80/102,212,071.20 = 40,931,601.60/x
  3. Step 3: Cross multiply
    68,141,380.80x = 102,212,071.20 × 40,931,601.60
  4. Step 4: Simplify right side
    68,141,380.80x = 4,183,703,777,069,234
  5. Step 5: Solve for x
    x = 4,183,703,777,069,234/68,141,380.80
  6. Step 6: Final answer
    x = 61,397,402.40

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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.