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Finding the Fourth Proportional to 86,747.30, 130,169.55 and 36,818.90

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Solution

The fourth proportional to 86,747.30, 130,169.55 and 36,818.90 is: 55,248.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,747.30 : 130,169.55 = 36,818.90 : x
  2. Step 2: Convert to fraction form
    86,747.30/130,169.55 = 36,818.90/x
  3. Step 3: Cross multiply
    86,747.30x = 130,169.55 × 36,818.90
  4. Step 4: Simplify right side
    86,747.30x = 4,792,699,644.50
  5. Step 5: Solve for x
    x = 4,792,699,644.50/86,747.30
  6. Step 6: Final answer
    x = 55,248.98

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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.