Home / 70,135.12-105,228.60-25,790.86

Finding the Fourth Proportional to 70,135.12, 105,228.60 and 25,790.86

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Solution

The fourth proportional to 70,135.12, 105,228.60 and 25,790.86 is: 38,695.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,135.12 : 105,228.60 = 25,790.86 : x
  2. Step 2: Convert to fraction form
    70,135.12/105,228.60 = 25,790.86/x
  3. Step 3: Cross multiply
    70,135.12x = 105,228.60 × 25,790.86
  4. Step 4: Simplify right side
    70,135.12x = 2,713,936,090.60
  5. Step 5: Solve for x
    x = 2,713,936,090.60/70,135.12
  6. Step 6: Final answer
    x = 38,695.82

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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.