Home / 80,781,474,504.40-121,114,880,863.80-31,075,590,446.80

Finding the Fourth Proportional to 80,781,474,504.40, 121,114,880,863.80 and 31,075,590,446.80

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Solution

The fourth proportional to 80,781,474,504.40, 121,114,880,863.80 and 31,075,590,446.80 is: 46,591,331,215.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,781,474,504.40 : 121,114,880,863.80 = 31,075,590,446.80 : x
  2. Step 2: Convert to fraction form
    80,781,474,504.40/121,114,880,863.80 = 31,075,590,446.80/x
  3. Step 3: Cross multiply
    80,781,474,504.40x = 121,114,880,863.80 × 31,075,590,446.80
  4. Step 4: Simplify right side
    80,781,474,504.40x = 3,763,716,434,736,423,370,752
  5. Step 5: Solve for x
    x = 3,763,716,434,736,423,370,752/80,781,474,504.40
  6. Step 6: Final answer
    x = 46,591,331,215.82

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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.