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Finding the Fourth Proportional to 81,052.95, 121,521.83 and 36,700.95

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Solution

The fourth proportional to 81,052.95, 121,521.83 and 36,700.95 is: 55,025.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,052.95 : 121,521.83 = 36,700.95 : x
  2. Step 2: Convert to fraction form
    81,052.95/121,521.83 = 36,700.95/x
  3. Step 3: Cross multiply
    81,052.95x = 121,521.83 × 36,700.95
  4. Step 4: Simplify right side
    81,052.95x = 4,459,966,423.23
  5. Step 5: Solve for x
    x = 4,459,966,423.23/81,052.95
  6. Step 6: Final answer
    x = 55,025.34

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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.