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Finding the Fourth Proportional to 90,339.84, 135,463.68 and 37,735.20

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Solution

The fourth proportional to 90,339.84, 135,463.68 and 37,735.20 is: 56,583.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,339.84 : 135,463.68 = 37,735.20 : x
  2. Step 2: Convert to fraction form
    90,339.84/135,463.68 = 37,735.20/x
  3. Step 3: Cross multiply
    90,339.84x = 135,463.68 × 37,735.20
  4. Step 4: Simplify right side
    90,339.84x = 5,111,749,057.54
  5. Step 5: Solve for x
    x = 5,111,749,057.54/90,339.84
  6. Step 6: Final answer
    x = 56,583.55

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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.