Home / 80,941,966.40-121,412,949.60-55,113,933.80

Finding the Fourth Proportional to 80,941,966.40, 121,412,949.60 and 55,113,933.80

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Solution

The fourth proportional to 80,941,966.40, 121,412,949.60 and 55,113,933.80 is: 82,670,900.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,941,966.40 : 121,412,949.60 = 55,113,933.80 : x
  2. Step 2: Convert to fraction form
    80,941,966.40/121,412,949.60 = 55,113,933.80/x
  3. Step 3: Cross multiply
    80,941,966.40x = 121,412,949.60 × 55,113,933.80
  4. Step 4: Simplify right side
    80,941,966.40x = 6,691,545,266,717,136
  5. Step 5: Solve for x
    x = 6,691,545,266,717,136/80,941,966.40
  6. Step 6: Final answer
    x = 82,670,900.70

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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.