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Finding the Fourth Proportional to 86,551.70, 129,730.35 and 36,623.30

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Solution

The fourth proportional to 86,551.70, 129,730.35 and 36,623.30 is: 54,893.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,551.70 : 129,730.35 = 36,623.30 : x
  2. Step 2: Convert to fraction form
    86,551.70/129,730.35 = 36,623.30/x
  3. Step 3: Cross multiply
    86,551.70x = 129,730.35 × 36,623.30
  4. Step 4: Simplify right side
    86,551.70x = 4,751,153,527.16
  5. Step 5: Solve for x
    x = 4,751,153,527.16/86,551.70
  6. Step 6: Final answer
    x = 54,893.82

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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.