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Finding the Fourth Proportional to 72,759.01, 100,407.06 and 40,928.14

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Solution

The fourth proportional to 72,759.01, 100,407.06 and 40,928.14 is: 56,480.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,759.01 : 100,407.06 = 40,928.14 : x
  2. Step 2: Convert to fraction form
    72,759.01/100,407.06 = 40,928.14/x
  3. Step 3: Cross multiply
    72,759.01x = 100,407.06 × 40,928.14
  4. Step 4: Simplify right side
    72,759.01x = 4,109,473,769.39
  5. Step 5: Solve for x
    x = 4,109,473,769.39/72,759.01
  6. Step 6: Final answer
    x = 56,480.62

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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.