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Finding the Fourth Proportional to 74,410.40, 111,615.60 and 19,006.40

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Solution

The fourth proportional to 74,410.40, 111,615.60 and 19,006.40 is: 28,509.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,410.40 : 111,615.60 = 19,006.40 : x
  2. Step 2: Convert to fraction form
    74,410.40/111,615.60 = 19,006.40/x
  3. Step 3: Cross multiply
    74,410.40x = 111,615.60 × 19,006.40
  4. Step 4: Simplify right side
    74,410.40x = 2,121,410,739.84
  5. Step 5: Solve for x
    x = 2,121,410,739.84/74,410.40
  6. Step 6: Final answer
    x = 28,509.60

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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.