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Finding the Fourth Proportional to 91,852.96, 137,451.12 and 71,995

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Solution

The fourth proportional to 91,852.96, 137,451.12 and 71,995 is: 107,735.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,852.96 : 137,451.12 = 71,995 : x
  2. Step 2: Convert to fraction form
    91,852.96/137,451.12 = 71,995/x
  3. Step 3: Cross multiply
    91,852.96x = 137,451.12 × 71,995
  4. Step 4: Simplify right side
    91,852.96x = 9,895,793,384.40
  5. Step 5: Solve for x
    x = 9,895,793,384.40/91,852.96
  6. Step 6: Final answer
    x = 107,735.16

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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.