Home / 72,637.38-100,238.98-40,805.59

Finding the Fourth Proportional to 72,637.38, 100,238.98 and 40,805.59

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Solution

The fourth proportional to 72,637.38, 100,238.98 and 40,805.59 is: 56,311.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,637.38 : 100,238.98 = 40,805.59 : x
  2. Step 2: Convert to fraction form
    72,637.38/100,238.98 = 40,805.59/x
  3. Step 3: Cross multiply
    72,637.38x = 100,238.98 × 40,805.59
  4. Step 4: Simplify right side
    72,637.38x = 4,090,310,719.90
  5. Step 5: Solve for x
    x = 4,090,310,719.90/72,637.38
  6. Step 6: Final answer
    x = 56,311.37

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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.