Home / 85,499.13-128,262.45-26,334.78

Finding the Fourth Proportional to 85,499.13, 128,262.45 and 26,334.78

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Solution

The fourth proportional to 85,499.13, 128,262.45 and 26,334.78 is: 39,506.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,499.13 : 128,262.45 = 26,334.78 : x
  2. Step 2: Convert to fraction form
    85,499.13/128,262.45 = 26,334.78/x
  3. Step 3: Cross multiply
    85,499.13x = 128,262.45 × 26,334.78
  4. Step 4: Simplify right side
    85,499.13x = 3,377,763,403.01
  5. Step 5: Solve for x
    x = 3,377,763,403.01/85,499.13
  6. Step 6: Final answer
    x = 39,506.41

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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.