Home / 72,283,068,980.37-99,753,054,644.75-40,169,784,654.45

Finding the Fourth Proportional to 72,283,068,980.37, 99,753,054,644.75 and 40,169,784,654.45

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Solution

The fourth proportional to 72,283,068,980.37, 99,753,054,644.75 and 40,169,784,654.45 is: 55,435,647,382.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,283,068,980.37 : 99,753,054,644.75 = 40,169,784,654.45 : x
  2. Step 2: Convert to fraction form
    72,283,068,980.37/99,753,054,644.75 = 40,169,784,654.45/x
  3. Step 3: Cross multiply
    72,283,068,980.37x = 99,753,054,644.75 × 40,169,784,654.45
  4. Step 4: Simplify right side
    72,283,068,980.37x = 4,007,058,723,702,989,389,824
  5. Step 5: Solve for x
    x = 4,007,058,723,702,989,389,824/72,283,068,980.37
  6. Step 6: Final answer
    x = 55,435,647,382.25

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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.