Home / 85,844.59-128,742.26-25,878.91

Finding the Fourth Proportional to 85,844.59, 128,742.26 and 25,878.91

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Solution

The fourth proportional to 85,844.59, 128,742.26 and 25,878.91 is: 38,810.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,844.59 : 128,742.26 = 25,878.91 : x
  2. Step 2: Convert to fraction form
    85,844.59/128,742.26 = 25,878.91/x
  3. Step 3: Cross multiply
    85,844.59x = 128,742.26 × 25,878.91
  4. Step 4: Simplify right side
    85,844.59x = 3,331,709,230.34
  5. Step 5: Solve for x
    x = 3,331,709,230.34/85,844.59
  6. Step 6: Final answer
    x = 38,810.94

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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.