Home / 83,631.08-115,403.94-45,905.33

Finding the Fourth Proportional to 83,631.08, 115,403.94 and 45,905.33

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Solution

The fourth proportional to 83,631.08, 115,403.94 and 45,905.33 is: 63,345.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,631.08 : 115,403.94 = 45,905.33 : x
  2. Step 2: Convert to fraction form
    83,631.08/115,403.94 = 45,905.33/x
  3. Step 3: Cross multiply
    83,631.08x = 115,403.94 × 45,905.33
  4. Step 4: Simplify right side
    83,631.08x = 5,297,656,237.51
  5. Step 5: Solve for x
    x = 5,297,656,237.51/83,631.08
  6. Step 6: Final answer
    x = 63,345.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.