Home / 57,987.90-80,169.55-42,856.70

Finding the Fourth Proportional to 57,987.90, 80,169.55 and 42,856.70

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Solution

The fourth proportional to 57,987.90, 80,169.55 and 42,856.70 is: 59,250.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,987.90 : 80,169.55 = 42,856.70 : x
  2. Step 2: Convert to fraction form
    57,987.90/80,169.55 = 42,856.70/x
  3. Step 3: Cross multiply
    57,987.90x = 80,169.55 × 42,856.70
  4. Step 4: Simplify right side
    57,987.90x = 3,435,801,845.50
  5. Step 5: Solve for x
    x = 3,435,801,845.50/57,987.90
  6. Step 6: Final answer
    x = 59,250.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.