Home / 85,496.40-128,246.82-40,507.23

Finding the Fourth Proportional to 85,496.40, 128,246.82 and 40,507.23

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Solution

The fourth proportional to 85,496.40, 128,246.82 and 40,507.23 is: 60,761.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,496.40 : 128,246.82 = 40,507.23 : x
  2. Step 2: Convert to fraction form
    85,496.40/128,246.82 = 40,507.23/x
  3. Step 3: Cross multiply
    85,496.40x = 128,246.82 × 40,507.23
  4. Step 4: Simplify right side
    85,496.40x = 5,194,923,434.51
  5. Step 5: Solve for x
    x = 5,194,923,434.51/85,496.40
  6. Step 6: Final answer
    x = 60,761.90

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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.