Home / 77,347.07-116,020.70-21,187.66

Finding the Fourth Proportional to 77,347.07, 116,020.70 and 21,187.66

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Solution

The fourth proportional to 77,347.07, 116,020.70 and 21,187.66 is: 31,781.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,347.07 : 116,020.70 = 21,187.66 : x
  2. Step 2: Convert to fraction form
    77,347.07/116,020.70 = 21,187.66/x
  3. Step 3: Cross multiply
    77,347.07x = 116,020.70 × 21,187.66
  4. Step 4: Simplify right side
    77,347.07x = 2,458,207,183.65
  5. Step 5: Solve for x
    x = 2,458,207,183.65/77,347.07
  6. Step 6: Final answer
    x = 31,781.52

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1.5x scale

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.