Home / 75,410.09-113,129.71-28,659.32

Finding the Fourth Proportional to 75,410.09, 113,129.71 and 28,659.32

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Solution

The fourth proportional to 75,410.09, 113,129.71 and 28,659.32 is: 42,994.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,410.09 : 113,129.71 = 28,659.32 : x
  2. Step 2: Convert to fraction form
    75,410.09/113,129.71 = 28,659.32/x
  3. Step 3: Cross multiply
    75,410.09x = 113,129.71 × 28,659.32
  4. Step 4: Simplify right side
    75,410.09x = 3,242,219,851.45
  5. Step 5: Solve for x
    x = 3,242,219,851.45/75,410.09
  6. Step 6: Final answer
    x = 42,994.51

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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.