Home / 85,899.11-128,899.08-35,975.36

Finding the Fourth Proportional to 85,899.11, 128,899.08 and 35,975.36

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Solution

The fourth proportional to 85,899.11, 128,899.08 and 35,975.36 is: 53,984.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,899.11 : 128,899.08 = 35,975.36 : x
  2. Step 2: Convert to fraction form
    85,899.11/128,899.08 = 35,975.36/x
  3. Step 3: Cross multiply
    85,899.11x = 128,899.08 × 35,975.36
  4. Step 4: Simplify right side
    85,899.11x = 4,637,191,128.92
  5. Step 5: Solve for x
    x = 4,637,191,128.92/85,899.11
  6. Step 6: Final answer
    x = 53,984.16

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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.