Home / 81,149.50-111,984.23-45,339.74

Finding the Fourth Proportional to 81,149.50, 111,984.23 and 45,339.74

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Solution

The fourth proportional to 81,149.50, 111,984.23 and 45,339.74 is: 62,567.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,149.50 : 111,984.23 = 45,339.74 : x
  2. Step 2: Convert to fraction form
    81,149.50/111,984.23 = 45,339.74/x
  3. Step 3: Cross multiply
    81,149.50x = 111,984.23 × 45,339.74
  4. Step 4: Simplify right side
    81,149.50x = 5,077,335,845.67
  5. Step 5: Solve for x
    x = 5,077,335,845.67/81,149.50
  6. Step 6: Final answer
    x = 62,567.68

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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.