Home / 77,347.57-116,021.45-21,188.16

Finding the Fourth Proportional to 77,347.57, 116,021.45 and 21,188.16

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Solution

The fourth proportional to 77,347.57, 116,021.45 and 21,188.16 is: 31,782.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,347.57 : 116,021.45 = 21,188.16 : x
  2. Step 2: Convert to fraction form
    77,347.57/116,021.45 = 21,188.16/x
  3. Step 3: Cross multiply
    77,347.57x = 116,021.45 × 21,188.16
  4. Step 4: Simplify right side
    77,347.57x = 2,458,280,940.09
  5. Step 5: Solve for x
    x = 2,458,280,940.09/77,347.57
  6. Step 6: Final answer
    x = 31,782.26

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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.