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Finding the Fourth Proportional to 74,562.46, 102,879.30 and 54,430.30

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Solution

The fourth proportional to 74,562.46, 102,879.30 and 54,430.30 is: 75,101.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,562.46 : 102,879.30 = 54,430.30 : x
  2. Step 2: Convert to fraction form
    74,562.46/102,879.30 = 54,430.30/x
  3. Step 3: Cross multiply
    74,562.46x = 102,879.30 × 54,430.30
  4. Step 4: Simplify right side
    74,562.46x = 5,599,751,162.79
  5. Step 5: Solve for x
    x = 5,599,751,162.79/74,562.46
  6. Step 6: Final answer
    x = 75,101.48

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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.