Home / 85,444.35-128,168.55-26,280.56

Finding the Fourth Proportional to 85,444.35, 128,168.55 and 26,280.56

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Solution

The fourth proportional to 85,444.35, 128,168.55 and 26,280.56 is: 39,421.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,444.35 : 128,168.55 = 26,280.56 : x
  2. Step 2: Convert to fraction form
    85,444.35/128,168.55 = 26,280.56/x
  3. Step 3: Cross multiply
    85,444.35x = 128,168.55 × 26,280.56
  4. Step 4: Simplify right side
    85,444.35x = 3,368,340,627.55
  5. Step 5: Solve for x
    x = 3,368,340,627.55/85,444.35
  6. Step 6: Final answer
    x = 39,421.46

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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.