Home / 80,919,145.20-121,378,717.80-48,607,532.40

Finding the Fourth Proportional to 80,919,145.20, 121,378,717.80 and 48,607,532.40

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Solution

The fourth proportional to 80,919,145.20, 121,378,717.80 and 48,607,532.40 is: 72,911,298.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,919,145.20 : 121,378,717.80 = 48,607,532.40 : x
  2. Step 2: Convert to fraction form
    80,919,145.20/121,378,717.80 = 48,607,532.40/x
  3. Step 3: Cross multiply
    80,919,145.20x = 121,378,717.80 × 48,607,532.40
  4. Step 4: Simplify right side
    80,919,145.20x = 5,899,919,958,133,956
  5. Step 5: Solve for x
    x = 5,899,919,958,133,956/80,919,145.20
  6. Step 6: Final answer
    x = 72,911,298.60

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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.