Home / 72,111,380,273.56-99,525,621,135.54-40,007,085,761.80

Finding the Fourth Proportional to 72,111,380,273.56, 99,525,621,135.54 and 40,007,085,761.80

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Solution

The fourth proportional to 72,111,380,273.56, 99,525,621,135.54 and 40,007,085,761.80 is: 55,216,389,495.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,111,380,273.56 : 99,525,621,135.54 = 40,007,085,761.80 : x
  2. Step 2: Convert to fraction form
    72,111,380,273.56/99,525,621,135.54 = 40,007,085,761.80/x
  3. Step 3: Cross multiply
    72,111,380,273.56x = 99,525,621,135.54 × 40,007,085,761.80
  4. Step 4: Simplify right side
    72,111,380,273.56x = 3,981,730,060,265,963,651,072
  5. Step 5: Solve for x
    x = 3,981,730,060,265,963,651,072/72,111,380,273.56
  6. Step 6: Final answer
    x = 55,216,389,495.82

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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.