Home / 89,979.36-135,051.24-45,636.72

Finding the Fourth Proportional to 89,979.36, 135,051.24 and 45,636.72

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Solution

The fourth proportional to 89,979.36, 135,051.24 and 45,636.72 is: 68,496.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,979.36 : 135,051.24 = 45,636.72 : x
  2. Step 2: Convert to fraction form
    89,979.36/135,051.24 = 45,636.72/x
  3. Step 3: Cross multiply
    89,979.36x = 135,051.24 × 45,636.72
  4. Step 4: Simplify right side
    89,979.36x = 6,163,295,625.53
  5. Step 5: Solve for x
    x = 6,163,295,625.53/89,979.36
  6. Step 6: Final answer
    x = 68,496.77

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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.