Home / 81,052.20-121,520.70-36,700.20

Finding the Fourth Proportional to 81,052.20, 121,520.70 and 36,700.20

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Solution

The fourth proportional to 81,052.20, 121,520.70 and 36,700.20 is: 55,024.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,052.20 : 121,520.70 = 36,700.20 : x
  2. Step 2: Convert to fraction form
    81,052.20/121,520.70 = 36,700.20/x
  3. Step 3: Cross multiply
    81,052.20x = 121,520.70 × 36,700.20
  4. Step 4: Simplify right side
    81,052.20x = 4,459,833,994.14
  5. Step 5: Solve for x
    x = 4,459,833,994.14/81,052.20
  6. Step 6: Final answer
    x = 55,024.22

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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.