Home / 72,111,380,272.56-99,525,621,134.16-40,007,085,760.80

Finding the Fourth Proportional to 72,111,380,272.56, 99,525,621,134.16 and 40,007,085,760.80

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Solution

The fourth proportional to 72,111,380,272.56, 99,525,621,134.16 and 40,007,085,760.80 is: 55,216,389,494.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,111,380,272.56 : 99,525,621,134.16 = 40,007,085,760.80 : x
  2. Step 2: Convert to fraction form
    72,111,380,272.56/99,525,621,134.16 = 40,007,085,760.80/x
  3. Step 3: Cross multiply
    72,111,380,272.56x = 99,525,621,134.16 × 40,007,085,760.80
  4. Step 4: Simplify right side
    72,111,380,272.56x = 3,981,730,060,111,228,436,480
  5. Step 5: Solve for x
    x = 3,981,730,060,111,228,436,480/72,111,380,272.56
  6. Step 6: Final answer
    x = 55,216,389,494.44

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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.