Home / 72,637.47-100,242.29-40,372.73

Finding the Fourth Proportional to 72,637.47, 100,242.29 and 40,372.73

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Solution

The fourth proportional to 72,637.47, 100,242.29 and 40,372.73 is: 55,715.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,637.47 : 100,242.29 = 40,372.73 : x
  2. Step 2: Convert to fraction form
    72,637.47/100,242.29 = 40,372.73/x
  3. Step 3: Cross multiply
    72,637.47x = 100,242.29 × 40,372.73
  4. Step 4: Simplify right side
    72,637.47x = 4,047,054,205.68
  5. Step 5: Solve for x
    x = 4,047,054,205.68/72,637.47
  6. Step 6: Final answer
    x = 55,715.79

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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.