Home / 31,978,128.12-44,132,358.78-20,380,898.04

Finding the Fourth Proportional to 31,978,128.12, 44,132,358.78 and 20,380,898.04

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Solution

The fourth proportional to 31,978,128.12, 44,132,358.78 and 20,380,898.04 is: 28,127,259.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,978,128.12 : 44,132,358.78 = 20,380,898.04 : x
  2. Step 2: Convert to fraction form
    31,978,128.12/44,132,358.78 = 20,380,898.04/x
  3. Step 3: Cross multiply
    31,978,128.12x = 44,132,358.78 × 20,380,898.04
  4. Step 4: Simplify right side
    31,978,128.12x = 899,457,104,559,878.75
  5. Step 5: Solve for x
    x = 899,457,104,559,878.75/31,978,128.12
  6. Step 6: Final answer
    x = 28,127,259.39

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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.