Home / 85,953.86-128,931.68-25,982.83

Finding the Fourth Proportional to 85,953.86, 128,931.68 and 25,982.83

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Solution

The fourth proportional to 85,953.86, 128,931.68 and 25,982.83 is: 38,974.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,953.86 : 128,931.68 = 25,982.83 : x
  2. Step 2: Convert to fraction form
    85,953.86/128,931.68 = 25,982.83/x
  3. Step 3: Cross multiply
    85,953.86x = 128,931.68 × 25,982.83
  4. Step 4: Simplify right side
    85,953.86x = 3,350,010,149.18
  5. Step 5: Solve for x
    x = 3,350,010,149.18/85,953.86
  6. Step 6: Final answer
    x = 38,974.51

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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.