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Finding the Fourth Proportional to 86,107.70, 129,180.30 and 36,159.32

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Solution

The fourth proportional to 86,107.70, 129,180.30 and 36,159.32 is: 54,246.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,107.70 : 129,180.30 = 36,159.32 : x
  2. Step 2: Convert to fraction form
    86,107.70/129,180.30 = 36,159.32/x
  3. Step 3: Cross multiply
    86,107.70x = 129,180.30 × 36,159.32
  4. Step 4: Simplify right side
    86,107.70x = 4,671,071,805.40
  5. Step 5: Solve for x
    x = 4,671,071,805.40/86,107.70
  6. Step 6: Final answer
    x = 54,246.85

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1.5x scale

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.