Home / 81,149.46-111,984.15-45,339.72

Finding the Fourth Proportional to 81,149.46, 111,984.15 and 45,339.72

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Solution

The fourth proportional to 81,149.46, 111,984.15 and 45,339.72 is: 62,567.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,149.46 : 111,984.15 = 45,339.72 : x
  2. Step 2: Convert to fraction form
    81,149.46/111,984.15 = 45,339.72/x
  3. Step 3: Cross multiply
    81,149.46x = 111,984.15 × 45,339.72
  4. Step 4: Simplify right side
    81,149.46x = 5,077,329,445.52
  5. Step 5: Solve for x
    x = 5,077,329,445.52/81,149.46
  6. Step 6: Final answer
    x = 62,567.63

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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.