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Finding the Fourth Proportional to 40,008, 54,810.76 and 38,512.80

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Solution

The fourth proportional to 40,008, 54,810.76 and 38,512.80 is: 52,762.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,008 : 54,810.76 = 38,512.80 : x
  2. Step 2: Convert to fraction form
    40,008/54,810.76 = 38,512.80/x
  3. Step 3: Cross multiply
    40,008x = 54,810.76 × 38,512.80
  4. Step 4: Simplify right side
    40,008x = 2,110,915,837.73
  5. Step 5: Solve for x
    x = 2,110,915,837.73/40,008
  6. Step 6: Final answer
    x = 52,762.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.