Home / 90,588.48-135,856.80-28,242.24

Finding the Fourth Proportional to 90,588.48, 135,856.80 and 28,242.24

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Solution

The fourth proportional to 90,588.48, 135,856.80 and 28,242.24 is: 42,355.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,588.48 : 135,856.80 = 28,242.24 : x
  2. Step 2: Convert to fraction form
    90,588.48/135,856.80 = 28,242.24/x
  3. Step 3: Cross multiply
    90,588.48x = 135,856.80 × 28,242.24
  4. Step 4: Simplify right side
    90,588.48x = 3,836,900,351.23
  5. Step 5: Solve for x
    x = 3,836,900,351.23/90,588.48
  6. Step 6: Final answer
    x = 42,355.28

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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.