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Finding the Fourth Proportional to 86,363.74, 129,563.16 and 36,443.80

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Solution

The fourth proportional to 86,363.74, 129,563.16 and 36,443.80 is: 54,673.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,363.74 : 129,563.16 = 36,443.80 : x
  2. Step 2: Convert to fraction form
    86,363.74/129,563.16 = 36,443.80/x
  3. Step 3: Cross multiply
    86,363.74x = 129,563.16 × 36,443.80
  4. Step 4: Simplify right side
    86,363.74x = 4,721,773,890.41
  5. Step 5: Solve for x
    x = 4,721,773,890.41/86,363.74
  6. Step 6: Final answer
    x = 54,673.11

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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.