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Finding the Fourth Proportional to 48,839.40, 73,259.10 and 20,752.20

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Solution

The fourth proportional to 48,839.40, 73,259.10 and 20,752.20 is: 31,128.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,839.40 : 73,259.10 = 20,752.20 : x
  2. Step 2: Convert to fraction form
    48,839.40/73,259.10 = 20,752.20/x
  3. Step 3: Cross multiply
    48,839.40x = 73,259.10 × 20,752.20
  4. Step 4: Simplify right side
    48,839.40x = 1,520,287,495.02
  5. Step 5: Solve for x
    x = 1,520,287,495.02/48,839.40
  6. Step 6: Final answer
    x = 31,128.30

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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.