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Finding the Fourth Proportional to 70,144.23, 105,240.95 and 36,394.02

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Solution

The fourth proportional to 70,144.23, 105,240.95 and 36,394.02 is: 54,603.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,144.23 : 105,240.95 = 36,394.02 : x
  2. Step 2: Convert to fraction form
    70,144.23/105,240.95 = 36,394.02/x
  3. Step 3: Cross multiply
    70,144.23x = 105,240.95 × 36,394.02
  4. Step 4: Simplify right side
    70,144.23x = 3,830,141,239.12
  5. Step 5: Solve for x
    x = 3,830,141,239.12/70,144.23
  6. Step 6: Final answer
    x = 54,603.80

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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.