Home / 81,511.90-112,491.87-45,704.23

Finding the Fourth Proportional to 81,511.90, 112,491.87 and 45,704.23

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Solution

The fourth proportional to 81,511.90, 112,491.87 and 45,704.23 is: 63,074.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,511.90 : 112,491.87 = 45,704.23 : x
  2. Step 2: Convert to fraction form
    81,511.90/112,491.87 = 45,704.23/x
  3. Step 3: Cross multiply
    81,511.90x = 112,491.87 × 45,704.23
  4. Step 4: Simplify right side
    81,511.90x = 5,141,354,299.61
  5. Step 5: Solve for x
    x = 5,141,354,299.61/81,511.90
  6. Step 6: Final answer
    x = 63,074.89

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1.5x scale

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.