Home / 90,399.48-135,505.08-30,383.40

Finding the Fourth Proportional to 90,399.48, 135,505.08 and 30,383.40

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Solution

The fourth proportional to 90,399.48, 135,505.08 and 30,383.40 is: 45,543.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,399.48 : 135,505.08 = 30,383.40 : x
  2. Step 2: Convert to fraction form
    90,399.48/135,505.08 = 30,383.40/x
  3. Step 3: Cross multiply
    90,399.48x = 135,505.08 × 30,383.40
  4. Step 4: Simplify right side
    90,399.48x = 4,117,105,047.67
  5. Step 5: Solve for x
    x = 4,117,105,047.67/90,399.48
  6. Step 6: Final answer
    x = 45,543.46

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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.