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Finding the Fourth Proportional to 78,660.82, 108,548.42 and 45,958.25

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Solution

The fourth proportional to 78,660.82, 108,548.42 and 45,958.25 is: 63,420.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,660.82 : 108,548.42 = 45,958.25 : x
  2. Step 2: Convert to fraction form
    78,660.82/108,548.42 = 45,958.25/x
  3. Step 3: Cross multiply
    78,660.82x = 108,548.42 × 45,958.25
  4. Step 4: Simplify right side
    78,660.82x = 4,988,695,465.04
  5. Step 5: Solve for x
    x = 4,988,695,465.04/78,660.82
  6. Step 6: Final answer
    x = 63,420.33

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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.