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Finding the Fourth Proportional to 60,309.87, 90,468.33 and 20,325.50

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Solution

The fourth proportional to 60,309.87, 90,468.33 and 20,325.50 is: 30,489.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,309.87 : 90,468.33 = 20,325.50 : x
  2. Step 2: Convert to fraction form
    60,309.87/90,468.33 = 20,325.50/x
  3. Step 3: Cross multiply
    60,309.87x = 90,468.33 × 20,325.50
  4. Step 4: Simplify right side
    60,309.87x = 1,838,813,852.11
  5. Step 5: Solve for x
    x = 1,838,813,852.11/60,309.87
  6. Step 6: Final answer
    x = 30,489.44

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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.