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Finding the Fourth Proportional to 91,290.40, 136,935.60 and 32,192.80

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Solution

The fourth proportional to 91,290.40, 136,935.60 and 32,192.80 is: 48,289.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,290.40 : 136,935.60 = 32,192.80 : x
  2. Step 2: Convert to fraction form
    91,290.40/136,935.60 = 32,192.80/x
  3. Step 3: Cross multiply
    91,290.40x = 136,935.60 × 32,192.80
  4. Step 4: Simplify right side
    91,290.40x = 4,408,340,383.68
  5. Step 5: Solve for x
    x = 4,408,340,383.68/91,290.40
  6. Step 6: Final answer
    x = 48,289.20

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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.