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Finding the Fourth Proportional to 69,078.61, 103,607.61 and 19,153.50

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Solution

The fourth proportional to 69,078.61, 103,607.61 and 19,153.50 is: 28,727.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,078.61 : 103,607.61 = 19,153.50 : x
  2. Step 2: Convert to fraction form
    69,078.61/103,607.61 = 19,153.50/x
  3. Step 3: Cross multiply
    69,078.61x = 103,607.61 × 19,153.50
  4. Step 4: Simplify right side
    69,078.61x = 1,984,448,358.14
  5. Step 5: Solve for x
    x = 1,984,448,358.14/69,078.61
  6. Step 6: Final answer
    x = 28,727.39

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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.