Home / 80,941,956.40-121,412,934.60-55,113,923.80

Finding the Fourth Proportional to 80,941,956.40, 121,412,934.60 and 55,113,923.80

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Solution

The fourth proportional to 80,941,956.40, 121,412,934.60 and 55,113,923.80 is: 82,670,885.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,941,956.40 : 121,412,934.60 = 55,113,923.80 : x
  2. Step 2: Convert to fraction form
    80,941,956.40/121,412,934.60 = 55,113,923.80/x
  3. Step 3: Cross multiply
    80,941,956.40x = 121,412,934.60 × 55,113,923.80
  4. Step 4: Simplify right side
    80,941,956.40x = 6,691,543,225,878,783
  5. Step 5: Solve for x
    x = 6,691,543,225,878,783/80,941,956.40
  6. Step 6: Final answer
    x = 82,670,885.70

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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.