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Finding the Fourth Proportional to 64,626.89, 89,185.74 and 39,476.39

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Solution

The fourth proportional to 64,626.89, 89,185.74 and 39,476.39 is: 54,477.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,626.89 : 89,185.74 = 39,476.39 : x
  2. Step 2: Convert to fraction form
    64,626.89/89,185.74 = 39,476.39/x
  3. Step 3: Cross multiply
    64,626.89x = 89,185.74 × 39,476.39
  4. Step 4: Simplify right side
    64,626.89x = 3,520,731,054.68
  5. Step 5: Solve for x
    x = 3,520,731,054.68/64,626.89
  6. Step 6: Final answer
    x = 54,477.80

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1.5x scale

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.