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Finding the Fourth Proportional to 72,476.60, 100,154.97 and 54,540.36

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Solution

The fourth proportional to 72,476.60, 100,154.97 and 54,540.36 is: 75,368.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,476.60 : 100,154.97 = 54,540.36 : x
  2. Step 2: Convert to fraction form
    72,476.60/100,154.97 = 54,540.36/x
  3. Step 3: Cross multiply
    72,476.60x = 100,154.97 × 54,540.36
  4. Step 4: Simplify right side
    72,476.60x = 5,462,488,119.59
  5. Step 5: Solve for x
    x = 5,462,488,119.59/72,476.60
  6. Step 6: Final answer
    x = 75,368.99

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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.