Home / 85,899.12-128,860.83-26,740.77

Finding the Fourth Proportional to 85,899.12, 128,860.83 and 26,740.77

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Solution

The fourth proportional to 85,899.12, 128,860.83 and 26,740.77 is: 40,114.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,899.12 : 128,860.83 = 26,740.77 : x
  2. Step 2: Convert to fraction form
    85,899.12/128,860.83 = 26,740.77/x
  3. Step 3: Cross multiply
    85,899.12x = 128,860.83 × 26,740.77
  4. Step 4: Simplify right side
    85,899.12x = 3,445,837,817.04
  5. Step 5: Solve for x
    x = 3,445,837,817.04/85,899.12
  6. Step 6: Final answer
    x = 40,114.94

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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.