Home / 77,263.77-115,876.93-21,104.15

Finding the Fourth Proportional to 77,263.77, 115,876.93 and 21,104.15

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Solution

The fourth proportional to 77,263.77, 115,876.93 and 21,104.15 is: 31,651.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,263.77 : 115,876.93 = 21,104.15 : x
  2. Step 2: Convert to fraction form
    77,263.77/115,876.93 = 21,104.15/x
  3. Step 3: Cross multiply
    77,263.77x = 115,876.93 × 21,104.15
  4. Step 4: Simplify right side
    77,263.77x = 2,445,483,519.68
  5. Step 5: Solve for x
    x = 2,445,483,519.68/77,263.77
  6. Step 6: Final answer
    x = 31,651.10

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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.