Home / 72,587.79-100,168.56-40,758.03

Finding the Fourth Proportional to 72,587.79, 100,168.56 and 40,758.03

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Solution

The fourth proportional to 72,587.79, 100,168.56 and 40,758.03 is: 56,244.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,587.79 : 100,168.56 = 40,758.03 : x
  2. Step 2: Convert to fraction form
    72,587.79/100,168.56 = 40,758.03/x
  3. Step 3: Cross multiply
    72,587.79x = 100,168.56 × 40,758.03
  4. Step 4: Simplify right side
    72,587.79x = 4,082,673,173.54
  5. Step 5: Solve for x
    x = 4,082,673,173.54/72,587.79
  6. Step 6: Final answer
    x = 56,244.63

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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.