Home / 72,013,822,743.68-99,379,075,387.20-40,331,436,087.68

Finding the Fourth Proportional to 72,013,822,743.68, 99,379,075,387.20 and 40,331,436,087.68

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Solution

The fourth proportional to 72,013,822,743.68, 99,379,075,387.20 and 40,331,436,087.68 is: 55,657,381,801.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,013,822,743.68 : 99,379,075,387.20 = 40,331,436,087.68 : x
  2. Step 2: Convert to fraction form
    72,013,822,743.68/99,379,075,387.20 = 40,331,436,087.68/x
  3. Step 3: Cross multiply
    72,013,822,743.68x = 99,379,075,387.20 × 40,331,436,087.68
  4. Step 4: Simplify right side
    72,013,822,743.68x = 4,008,100,827,431,589,380,096
  5. Step 5: Solve for x
    x = 4,008,100,827,431,589,380,096/72,013,822,743.68
  6. Step 6: Final answer
    x = 55,657,381,801.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.