Home / 90,588.45-135,811.23-57,238.23

Finding the Fourth Proportional to 90,588.45, 135,811.23 and 57,238.23

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Solution

The fourth proportional to 90,588.45, 135,811.23 and 57,238.23 is: 85,812.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,588.45 : 135,811.23 = 57,238.23 : x
  2. Step 2: Convert to fraction form
    90,588.45/135,811.23 = 57,238.23/x
  3. Step 3: Cross multiply
    90,588.45x = 135,811.23 × 57,238.23
  4. Step 4: Simplify right side
    90,588.45x = 7,773,594,419.32
  5. Step 5: Solve for x
    x = 7,773,594,419.32/90,588.45
  6. Step 6: Final answer
    x = 85,812.20

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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.