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Finding the Fourth Proportional to 91,968.99, 137,924.32 and 39,364.35

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Solution

The fourth proportional to 91,968.99, 137,924.32 and 39,364.35 is: 59,034.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,968.99 : 137,924.32 = 39,364.35 : x
  2. Step 2: Convert to fraction form
    91,968.99/137,924.32 = 39,364.35/x
  3. Step 3: Cross multiply
    91,968.99x = 137,924.32 × 39,364.35
  4. Step 4: Simplify right side
    91,968.99x = 5,429,301,205.99
  5. Step 5: Solve for x
    x = 5,429,301,205.99/91,968.99
  6. Step 6: Final answer
    x = 59,034.04

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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.