Home / 47,689.30-65,790.69-28,815.50

Finding the Fourth Proportional to 47,689.30, 65,790.69 and 28,815.50

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Solution

The fourth proportional to 47,689.30, 65,790.69 and 28,815.50 is: 39,752.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,689.30 : 65,790.69 = 28,815.50 : x
  2. Step 2: Convert to fraction form
    47,689.30/65,790.69 = 28,815.50/x
  3. Step 3: Cross multiply
    47,689.30x = 65,790.69 × 28,815.50
  4. Step 4: Simplify right side
    47,689.30x = 1,895,791,627.70
  5. Step 5: Solve for x
    x = 1,895,791,627.70/47,689.30
  6. Step 6: Final answer
    x = 39,752.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.