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Finding the Fourth Proportional to 67,604, 101,406.40 and 18,356

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Solution

The fourth proportional to 67,604, 101,406.40 and 18,356 is: 27,534.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,604 : 101,406.40 = 18,356 : x
  2. Step 2: Convert to fraction form
    67,604/101,406.40 = 18,356/x
  3. Step 3: Cross multiply
    67,604x = 101,406.40 × 18,356
  4. Step 4: Simplify right side
    67,604x = 1,861,415,878.40
  5. Step 5: Solve for x
    x = 1,861,415,878.40/67,604
  6. Step 6: Final answer
    x = 27,534.11

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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.