Home / 80,918,999.70-121,378,499.55-35,480,794.20

Finding the Fourth Proportional to 80,918,999.70, 121,378,499.55 and 35,480,794.20

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Solution

The fourth proportional to 80,918,999.70, 121,378,499.55 and 35,480,794.20 is: 53,221,191.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,918,999.70 : 121,378,499.55 = 35,480,794.20 : x
  2. Step 2: Convert to fraction form
    80,918,999.70/121,378,499.55 = 35,480,794.20/x
  3. Step 3: Cross multiply
    80,918,999.70x = 121,378,499.55 × 35,480,794.20
  4. Step 4: Simplify right side
    80,918,999.70x = 4,306,605,562,838,343
  5. Step 5: Solve for x
    x = 4,306,605,562,838,343/80,918,999.70
  6. Step 6: Final answer
    x = 53,221,191.30

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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.