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Finding the Fourth Proportional to 48,231.40, 72,347.10 and 20,583.40

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Solution

The fourth proportional to 48,231.40, 72,347.10 and 20,583.40 is: 30,875.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,231.40 : 72,347.10 = 20,583.40 : x
  2. Step 2: Convert to fraction form
    48,231.40/72,347.10 = 20,583.40/x
  3. Step 3: Cross multiply
    48,231.40x = 72,347.10 × 20,583.40
  4. Step 4: Simplify right side
    48,231.40x = 1,489,149,298.14
  5. Step 5: Solve for x
    x = 1,489,149,298.14/48,231.40
  6. Step 6: Final answer
    x = 30,875.10

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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.