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Finding the Fourth Proportional to 78,592.81, 108,426.03 and 48,369.01

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Solution

The fourth proportional to 78,592.81, 108,426.03 and 48,369.01 is: 66,729.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,592.81 : 108,426.03 = 48,369.01 : x
  2. Step 2: Convert to fraction form
    78,592.81/108,426.03 = 48,369.01/x
  3. Step 3: Cross multiply
    78,592.81x = 108,426.03 × 48,369.01
  4. Step 4: Simplify right side
    78,592.81x = 5,244,459,729.33
  5. Step 5: Solve for x
    x = 5,244,459,729.33/78,592.81
  6. Step 6: Final answer
    x = 66,729.51

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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.