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Finding the Fourth Proportional to 86,477.94, 129,766.92 and 36,554.79

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Solution

The fourth proportional to 86,477.94, 129,766.92 and 36,554.79 is: 54,853.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,477.94 : 129,766.92 = 36,554.79 : x
  2. Step 2: Convert to fraction form
    86,477.94/129,766.92 = 36,554.79/x
  3. Step 3: Cross multiply
    86,477.94x = 129,766.92 × 36,554.79
  4. Step 4: Simplify right side
    86,477.94x = 4,743,602,509.55
  5. Step 5: Solve for x
    x = 4,743,602,509.55/86,477.94
  6. Step 6: Final answer
    x = 54,853.32

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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.