Home / 72,517.43-100,073.63-40,686.25

Finding the Fourth Proportional to 72,517.43, 100,073.63 and 40,686.25

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Solution

The fourth proportional to 72,517.43, 100,073.63 and 40,686.25 is: 56,146.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,517.43 : 100,073.63 = 40,686.25 : x
  2. Step 2: Convert to fraction form
    72,517.43/100,073.63 = 40,686.25/x
  3. Step 3: Cross multiply
    72,517.43x = 100,073.63 × 40,686.25
  4. Step 4: Simplify right side
    72,517.43x = 4,071,620,728.59
  5. Step 5: Solve for x
    x = 4,071,620,728.59/72,517.43
  6. Step 6: Final answer
    x = 56,146.79

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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.