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Finding the Fourth Proportional to 64,806.75, 89,463.29 and 45,702.09

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Solution

The fourth proportional to 64,806.75, 89,463.29 and 45,702.09 is: 63,090.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,806.75 : 89,463.29 = 45,702.09 : x
  2. Step 2: Convert to fraction form
    64,806.75/89,463.29 = 45,702.09/x
  3. Step 3: Cross multiply
    64,806.75x = 89,463.29 × 45,702.09
  4. Step 4: Simplify right side
    64,806.75x = 4,088,659,102.77
  5. Step 5: Solve for x
    x = 4,088,659,102.77/64,806.75
  6. Step 6: Final answer
    x = 63,090.02

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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.