Home / 75,705.60-113,558.40-70,003.20

Finding the Fourth Proportional to 75,705.60, 113,558.40 and 70,003.20

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Solution

The fourth proportional to 75,705.60, 113,558.40 and 70,003.20 is: 105,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,705.60 : 113,558.40 = 70,003.20 : x
  2. Step 2: Convert to fraction form
    75,705.60/113,558.40 = 70,003.20/x
  3. Step 3: Cross multiply
    75,705.60x = 113,558.40 × 70,003.20
  4. Step 4: Simplify right side
    75,705.60x = 7,949,451,386.88
  5. Step 5: Solve for x
    x = 7,949,451,386.88/75,705.60
  6. Step 6: Final answer
    x = 105,004.80

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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.