Home / 80,457,778.40-120,686,667.60-19,873,504.40

Finding the Fourth Proportional to 80,457,778.40, 120,686,667.60 and 19,873,504.40

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Solution

The fourth proportional to 80,457,778.40, 120,686,667.60 and 19,873,504.40 is: 29,810,256.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,457,778.40 : 120,686,667.60 = 19,873,504.40 : x
  2. Step 2: Convert to fraction form
    80,457,778.40/120,686,667.60 = 19,873,504.40/x
  3. Step 3: Cross multiply
    80,457,778.40x = 120,686,667.60 × 19,873,504.40
  4. Step 4: Simplify right side
    80,457,778.40x = 2,398,467,019,569,937
  5. Step 5: Solve for x
    x = 2,398,467,019,569,937/80,457,778.40
  6. Step 6: Final answer
    x = 29,810,256.60

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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.