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Finding the Fourth Proportional to 48,813.40, 73,192.34 and 19,215.20

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Solution

The fourth proportional to 48,813.40, 73,192.34 and 19,215.20 is: 28,811.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,813.40 : 73,192.34 = 19,215.20 : x
  2. Step 2: Convert to fraction form
    48,813.40/73,192.34 = 19,215.20/x
  3. Step 3: Cross multiply
    48,813.40x = 73,192.34 × 19,215.20
  4. Step 4: Simplify right side
    48,813.40x = 1,406,405,451.57
  5. Step 5: Solve for x
    x = 1,406,405,451.57/48,813.40
  6. Step 6: Final answer
    x = 28,811.87

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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.