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Finding the Fourth Proportional to 30,806.01, 42,409.44 and 29,395.40

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Solution

The fourth proportional to 30,806.01, 42,409.44 and 29,395.40 is: 40,467.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,806.01 : 42,409.44 = 29,395.40 : x
  2. Step 2: Convert to fraction form
    30,806.01/42,409.44 = 29,395.40/x
  3. Step 3: Cross multiply
    30,806.01x = 42,409.44 × 29,395.40
  4. Step 4: Simplify right side
    30,806.01x = 1,246,642,240.53
  5. Step 5: Solve for x
    x = 1,246,642,240.53/30,806.01
  6. Step 6: Final answer
    x = 40,467.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.