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Finding the Fourth Proportional to 47,000.80, 70,517.40 and 20,724.40

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Solution

The fourth proportional to 47,000.80, 70,517.40 and 20,724.40 is: 31,093.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,000.80 : 70,517.40 = 20,724.40 : x
  2. Step 2: Convert to fraction form
    47,000.80/70,517.40 = 20,724.40/x
  3. Step 3: Cross multiply
    47,000.80x = 70,517.40 × 20,724.40
  4. Step 4: Simplify right side
    47,000.80x = 1,461,430,804.56
  5. Step 5: Solve for x
    x = 1,461,430,804.56/47,000.80
  6. Step 6: Final answer
    x = 31,093.74

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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.