Home / 47,700.11-71,551.53-12,639.75

Finding the Fourth Proportional to 47,700.11, 71,551.53 and 12,639.75

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Solution

The fourth proportional to 47,700.11, 71,551.53 and 12,639.75 is: 18,959.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,700.11 : 71,551.53 = 12,639.75 : x
  2. Step 2: Convert to fraction form
    47,700.11/71,551.53 = 12,639.75/x
  3. Step 3: Cross multiply
    47,700.11x = 71,551.53 × 12,639.75
  4. Step 4: Simplify right side
    47,700.11x = 904,393,451.32
  5. Step 5: Solve for x
    x = 904,393,451.32/47,700.11
  6. Step 6: Final answer
    x = 18,959.99

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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.