Home / 85,899.50-128,861.39-26,741.15

Finding the Fourth Proportional to 85,899.50, 128,861.39 and 26,741.15

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Solution

The fourth proportional to 85,899.50, 128,861.39 and 26,741.15 is: 40,115.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,899.50 : 128,861.39 = 26,741.15 : x
  2. Step 2: Convert to fraction form
    85,899.50/128,861.39 = 26,741.15/x
  3. Step 3: Cross multiply
    85,899.50x = 128,861.39 × 26,741.15
  4. Step 4: Simplify right side
    85,899.50x = 3,445,901,181.74
  5. Step 5: Solve for x
    x = 3,445,901,181.74/85,899.50
  6. Step 6: Final answer
    x = 40,115.50

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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.