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Finding the Fourth Proportional to 48,969.70, 73,466.70 and 13,909.30

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Solution

The fourth proportional to 48,969.70, 73,466.70 and 13,909.30 is: 20,867.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,969.70 : 73,466.70 = 13,909.30 : x
  2. Step 2: Convert to fraction form
    48,969.70/73,466.70 = 13,909.30/x
  3. Step 3: Cross multiply
    48,969.70x = 73,466.70 × 13,909.30
  4. Step 4: Simplify right side
    48,969.70x = 1,021,870,370.31
  5. Step 5: Solve for x
    x = 1,021,870,370.31/48,969.70
  6. Step 6: Final answer
    x = 20,867.40

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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.