Home / 85,686.49-128,535.18-26,517.19

Finding the Fourth Proportional to 85,686.49, 128,535.18 and 26,517.19

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Solution

The fourth proportional to 85,686.49, 128,535.18 and 26,517.19 is: 39,777.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,686.49 : 128,535.18 = 26,517.19 : x
  2. Step 2: Convert to fraction form
    85,686.49/128,535.18 = 26,517.19/x
  3. Step 3: Cross multiply
    85,686.49x = 128,535.18 × 26,517.19
  4. Step 4: Simplify right side
    85,686.49x = 3,408,391,789.74
  5. Step 5: Solve for x
    x = 3,408,391,789.74/85,686.49
  6. Step 6: Final answer
    x = 39,777.47

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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.