Home / 72,777.28-100,433.06-40,946.72

Finding the Fourth Proportional to 72,777.28, 100,433.06 and 40,946.72

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Solution

The fourth proportional to 72,777.28, 100,433.06 and 40,946.72 is: 56,506.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,777.28 : 100,433.06 = 40,946.72 : x
  2. Step 2: Convert to fraction form
    72,777.28/100,433.06 = 40,946.72/x
  3. Step 3: Cross multiply
    72,777.28x = 100,433.06 × 40,946.72
  4. Step 4: Simplify right side
    72,777.28x = 4,112,404,386.56
  5. Step 5: Solve for x
    x = 4,112,404,386.56/72,777.28
  6. Step 6: Final answer
    x = 56,506.71

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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.