Home / 77,077.22-115,618.23-20,917.13

Finding the Fourth Proportional to 77,077.22, 115,618.23 and 20,917.13

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Solution

The fourth proportional to 77,077.22, 115,618.23 and 20,917.13 is: 31,376.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,077.22 : 115,618.23 = 20,917.13 : x
  2. Step 2: Convert to fraction form
    77,077.22/115,618.23 = 20,917.13/x
  3. Step 3: Cross multiply
    77,077.22x = 115,618.23 × 20,917.13
  4. Step 4: Simplify right side
    77,077.22x = 2,418,400,969.19
  5. Step 5: Solve for x
    x = 2,418,400,969.19/77,077.22
  6. Step 6: Final answer
    x = 31,376.34

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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.