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Finding the Fourth Proportional to 69,395.94, 104,095.53 and 31,987.31

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Solution

The fourth proportional to 69,395.94, 104,095.53 and 31,987.31 is: 47,981.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,395.94 : 104,095.53 = 31,987.31 : x
  2. Step 2: Convert to fraction form
    69,395.94/104,095.53 = 31,987.31/x
  3. Step 3: Cross multiply
    69,395.94x = 104,095.53 × 31,987.31
  4. Step 4: Simplify right side
    69,395.94x = 3,329,735,467.25
  5. Step 5: Solve for x
    x = 3,329,735,467.25/69,395.94
  6. Step 6: Final answer
    x = 47,981.70

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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.