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Finding the Fourth Proportional to 72,517.68, 100,036.62 and 45,609.48

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Solution

The fourth proportional to 72,517.68, 100,036.62 and 45,609.48 is: 62,917.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,517.68 : 100,036.62 = 45,609.48 : x
  2. Step 2: Convert to fraction form
    72,517.68/100,036.62 = 45,609.48/x
  3. Step 3: Cross multiply
    72,517.68x = 100,036.62 × 45,609.48
  4. Step 4: Simplify right side
    72,517.68x = 4,562,618,219.16
  5. Step 5: Solve for x
    x = 4,562,618,219.16/72,517.68
  6. Step 6: Final answer
    x = 62,917.32

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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.