Home / 73,018.77-109,539.89-28,621.45

Finding the Fourth Proportional to 73,018.77, 109,539.89 and 28,621.45

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Solution

The fourth proportional to 73,018.77, 109,539.89 and 28,621.45 is: 42,936.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,018.77 : 109,539.89 = 28,621.45 : x
  2. Step 2: Convert to fraction form
    73,018.77/109,539.89 = 28,621.45/x
  3. Step 3: Cross multiply
    73,018.77x = 109,539.89 × 28,621.45
  4. Step 4: Simplify right side
    73,018.77x = 3,135,190,484.64
  5. Step 5: Solve for x
    x = 3,135,190,484.64/73,018.77
  6. Step 6: Final answer
    x = 42,936.77

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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.