Home / 77,005.62-115,512.52-21,605.94

Finding the Fourth Proportional to 77,005.62, 115,512.52 and 21,605.94

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Solution

The fourth proportional to 77,005.62, 115,512.52 and 21,605.94 is: 32,410.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,005.62 : 115,512.52 = 21,605.94 : x
  2. Step 2: Convert to fraction form
    77,005.62/115,512.52 = 21,605.94/x
  3. Step 3: Cross multiply
    77,005.62x = 115,512.52 × 21,605.94
  4. Step 4: Simplify right side
    77,005.62x = 2,495,756,576.37
  5. Step 5: Solve for x
    x = 2,495,756,576.37/77,005.62
  6. Step 6: Final answer
    x = 32,410.06

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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.