Home / 55,117.19-76,063.64-31,243.65

Finding the Fourth Proportional to 55,117.19, 76,063.64 and 31,243.65

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Solution

The fourth proportional to 55,117.19, 76,063.64 and 31,243.65 is: 43,117.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,117.19 : 76,063.64 = 31,243.65 : x
  2. Step 2: Convert to fraction form
    55,117.19/76,063.64 = 31,243.65/x
  3. Step 3: Cross multiply
    55,117.19x = 76,063.64 × 31,243.65
  4. Step 4: Simplify right side
    55,117.19x = 2,376,505,745.89
  5. Step 5: Solve for x
    x = 2,376,505,745.89/55,117.19
  6. Step 6: Final answer
    x = 43,117.32

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Half scale
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Double scale
Find fourth proportional to 55,118.19, 76,065.02 and 31,244.65
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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.