Home / 31,507,400.40-47,261,100.60-20,160,661.20

Finding the Fourth Proportional to 31,507,400.40, 47,261,100.60 and 20,160,661.20

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Solution

The fourth proportional to 31,507,400.40, 47,261,100.60 and 20,160,661.20 is: 30,240,991.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,507,400.40 : 47,261,100.60 = 20,160,661.20 : x
  2. Step 2: Convert to fraction form
    31,507,400.40/47,261,100.60 = 20,160,661.20/x
  3. Step 3: Cross multiply
    31,507,400.40x = 47,261,100.60 × 20,160,661.20
  4. Step 4: Simplify right side
    31,507,400.40x = 952,815,037,135,716.75
  5. Step 5: Solve for x
    x = 952,815,037,135,716.75/31,507,400.40
  6. Step 6: Final answer
    x = 30,240,991.80

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1.5x scale

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.