Home / 85,909.10-128,896.05-41,575.10

Finding the Fourth Proportional to 85,909.10, 128,896.05 and 41,575.10

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Solution

The fourth proportional to 85,909.10, 128,896.05 and 41,575.10 is: 62,378.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,909.10 : 128,896.05 = 41,575.10 : x
  2. Step 2: Convert to fraction form
    85,909.10/128,896.05 = 41,575.10/x
  3. Step 3: Cross multiply
    85,909.10x = 128,896.05 × 41,575.10
  4. Step 4: Simplify right side
    85,909.10x = 5,358,866,168.36
  5. Step 5: Solve for x
    x = 5,358,866,168.36/85,909.10
  6. Step 6: Final answer
    x = 62,378.33

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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.