Home / 85,628.06-128,410.23-29,452.40

Finding the Fourth Proportional to 85,628.06, 128,410.23 and 29,452.40

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Solution

The fourth proportional to 85,628.06, 128,410.23 and 29,452.40 is: 44,167.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,628.06 : 128,410.23 = 29,452.40 : x
  2. Step 2: Convert to fraction form
    85,628.06/128,410.23 = 29,452.40/x
  3. Step 3: Cross multiply
    85,628.06x = 128,410.23 × 29,452.40
  4. Step 4: Simplify right side
    85,628.06x = 3,781,989,458.05
  5. Step 5: Solve for x
    x = 3,781,989,458.05/85,628.06
  6. Step 6: Final answer
    x = 44,167.64

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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.