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Finding the Fourth Proportional to 82,994.70, 124,328.03 and 45,487.65

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Solution

The fourth proportional to 82,994.70, 124,328.03 and 45,487.65 is: 68,141.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,994.70 : 124,328.03 = 45,487.65 : x
  2. Step 2: Convert to fraction form
    82,994.70/124,328.03 = 45,487.65/x
  3. Step 3: Cross multiply
    82,994.70x = 124,328.03 × 45,487.65
  4. Step 4: Simplify right side
    82,994.70x = 5,655,389,686.39
  5. Step 5: Solve for x
    x = 5,655,389,686.39/82,994.70
  6. Step 6: Final answer
    x = 68,141.58

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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.