Home / 85,451.10-128,188.80-26,291.58

Finding the Fourth Proportional to 85,451.10, 128,188.80 and 26,291.58

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Solution

The fourth proportional to 85,451.10, 128,188.80 and 26,291.58 is: 39,441.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,451.10 : 128,188.80 = 26,291.58 : x
  2. Step 2: Convert to fraction form
    85,451.10/128,188.80 = 26,291.58/x
  3. Step 3: Cross multiply
    85,451.10x = 128,188.80 × 26,291.58
  4. Step 4: Simplify right side
    85,451.10x = 3,370,286,090.30
  5. Step 5: Solve for x
    x = 3,370,286,090.30/85,451.10
  6. Step 6: Final answer
    x = 39,441.11

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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.