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Finding the Fourth Proportional to 84,407.94, 126,609.48 and 40,003.74

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Solution

The fourth proportional to 84,407.94, 126,609.48 and 40,003.74 is: 60,004.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,407.94 : 126,609.48 = 40,003.74 : x
  2. Step 2: Convert to fraction form
    84,407.94/126,609.48 = 40,003.74/x
  3. Step 3: Cross multiply
    84,407.94x = 126,609.48 × 40,003.74
  4. Step 4: Simplify right side
    84,407.94x = 5,064,852,719.46
  5. Step 5: Solve for x
    x = 5,064,852,719.46/84,407.94
  6. Step 6: Final answer
    x = 60,004.46

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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.