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Finding the Fourth Proportional to 66,973.64, 100,460.46 and 25,420.64

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Solution

The fourth proportional to 66,973.64, 100,460.46 and 25,420.64 is: 38,130.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,973.64 : 100,460.46 = 25,420.64 : x
  2. Step 2: Convert to fraction form
    66,973.64/100,460.46 = 25,420.64/x
  3. Step 3: Cross multiply
    66,973.64x = 100,460.46 × 25,420.64
  4. Step 4: Simplify right side
    66,973.64x = 2,553,769,187.89
  5. Step 5: Solve for x
    x = 2,553,769,187.89/66,973.64
  6. Step 6: Final answer
    x = 38,130.96

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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.