Home / 72,808.13-100,455.57-42,600.87

Finding the Fourth Proportional to 72,808.13, 100,455.57 and 42,600.87

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Solution

The fourth proportional to 72,808.13, 100,455.57 and 42,600.87 is: 58,777.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,808.13 : 100,455.57 = 42,600.87 : x
  2. Step 2: Convert to fraction form
    72,808.13/100,455.57 = 42,600.87/x
  3. Step 3: Cross multiply
    72,808.13x = 100,455.57 × 42,600.87
  4. Step 4: Simplify right side
    72,808.13x = 4,279,494,678.35
  5. Step 5: Solve for x
    x = 4,279,494,678.35/72,808.13
  6. Step 6: Final answer
    x = 58,777.71

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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.