Home / 72,646.24-100,240.56-40,809.04

Finding the Fourth Proportional to 72,646.24, 100,240.56 and 40,809.04

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Solution

The fourth proportional to 72,646.24, 100,240.56 and 40,809.04 is: 56,310.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,646.24 : 100,240.56 = 40,809.04 : x
  2. Step 2: Convert to fraction form
    72,646.24/100,240.56 = 40,809.04/x
  3. Step 3: Cross multiply
    72,646.24x = 100,240.56 × 40,809.04
  4. Step 4: Simplify right side
    72,646.24x = 4,090,721,022.66
  5. Step 5: Solve for x
    x = 4,090,721,022.66/72,646.24
  6. Step 6: Final answer
    x = 56,310.15

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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.