Home / 72,940.13-100,657.37-39,406.13

Finding the Fourth Proportional to 72,940.13, 100,657.37 and 39,406.13

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Solution

The fourth proportional to 72,940.13, 100,657.37 and 39,406.13 is: 54,380.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,940.13 : 100,657.37 = 39,406.13 : x
  2. Step 2: Convert to fraction form
    72,940.13/100,657.37 = 39,406.13/x
  3. Step 3: Cross multiply
    72,940.13x = 100,657.37 × 39,406.13
  4. Step 4: Simplify right side
    72,940.13x = 3,966,517,407.68
  5. Step 5: Solve for x
    x = 3,966,517,407.68/72,940.13
  6. Step 6: Final answer
    x = 54,380.45

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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.