Home / 85,930.32-128,885.93-26,761.04

Finding the Fourth Proportional to 85,930.32, 128,885.93 and 26,761.04

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Solution

The fourth proportional to 85,930.32, 128,885.93 and 26,761.04 is: 40,138.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,930.32 : 128,885.93 = 26,761.04 : x
  2. Step 2: Convert to fraction form
    85,930.32/128,885.93 = 26,761.04/x
  3. Step 3: Cross multiply
    85,930.32x = 128,885.93 × 26,761.04
  4. Step 4: Simplify right side
    85,930.32x = 3,449,121,528.17
  5. Step 5: Solve for x
    x = 3,449,121,528.17/85,930.32
  6. Step 6: Final answer
    x = 40,138.59

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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.