Home / 85,740.28-128,614.36-41,404.32

Finding the Fourth Proportional to 85,740.28, 128,614.36 and 41,404.32

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Solution

The fourth proportional to 85,740.28, 128,614.36 and 41,404.32 is: 62,108.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,740.28 : 128,614.36 = 41,404.32 : x
  2. Step 2: Convert to fraction form
    85,740.28/128,614.36 = 41,404.32/x
  3. Step 3: Cross multiply
    85,740.28x = 128,614.36 × 41,404.32
  4. Step 4: Simplify right side
    85,740.28x = 5,325,190,118.04
  5. Step 5: Solve for x
    x = 5,325,190,118.04/85,740.28
  6. Step 6: Final answer
    x = 62,108.38

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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.