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Finding the Fourth Proportional to 72,476.70, 100,066.96 and 45,294.30

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Solution

The fourth proportional to 72,476.70, 100,066.96 and 45,294.30 is: 62,536.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,476.70 : 100,066.96 = 45,294.30 : x
  2. Step 2: Convert to fraction form
    72,476.70/100,066.96 = 45,294.30/x
  3. Step 3: Cross multiply
    72,476.70x = 100,066.96 × 45,294.30
  4. Step 4: Simplify right side
    72,476.70x = 4,532,462,906.33
  5. Step 5: Solve for x
    x = 4,532,462,906.33/72,476.70
  6. Step 6: Final answer
    x = 62,536.83

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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.