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Finding the Fourth Proportional to 64,900.43, 89,603.14 and 49,764.01

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Solution

The fourth proportional to 64,900.43, 89,603.14 and 49,764.01 is: 68,705.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,900.43 : 89,603.14 = 49,764.01 : x
  2. Step 2: Convert to fraction form
    64,900.43/89,603.14 = 49,764.01/x
  3. Step 3: Cross multiply
    64,900.43x = 89,603.14 × 49,764.01
  4. Step 4: Simplify right side
    64,900.43x = 4,459,011,554.99
  5. Step 5: Solve for x
    x = 4,459,011,554.99/64,900.43
  6. Step 6: Final answer
    x = 68,705.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.