Home / 80,861,523.20-121,209,616.20-39,857,897.60

Finding the Fourth Proportional to 80,861,523.20, 121,209,616.20 and 39,857,897.60

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Solution

The fourth proportional to 80,861,523.20, 121,209,616.20 and 39,857,897.60 is: 59,746,097.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,861,523.20 : 121,209,616.20 = 39,857,897.60 : x
  2. Step 2: Convert to fraction form
    80,861,523.20/121,209,616.20 = 39,857,897.60/x
  3. Step 3: Cross multiply
    80,861,523.20x = 121,209,616.20 × 39,857,897.60
  4. Step 4: Simplify right side
    80,861,523.20x = 4,831,160,470,634,901
  5. Step 5: Solve for x
    x = 4,831,160,470,634,901/80,861,523.20
  6. Step 6: Final answer
    x = 59,746,097.77

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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.