Home / 85,421.92-128,145.16-26,262.56

Finding the Fourth Proportional to 85,421.92, 128,145.16 and 26,262.56

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Solution

The fourth proportional to 85,421.92, 128,145.16 and 26,262.56 is: 39,397.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,421.92 : 128,145.16 = 26,262.56 : x
  2. Step 2: Convert to fraction form
    85,421.92/128,145.16 = 26,262.56/x
  3. Step 3: Cross multiply
    85,421.92x = 128,145.16 × 26,262.56
  4. Step 4: Simplify right side
    85,421.92x = 3,365,419,953.21
  5. Step 5: Solve for x
    x = 3,365,419,953.21/85,421.92
  6. Step 6: Final answer
    x = 39,397.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.