Home / 81,213.40-112,109.04-49,392.52

Finding the Fourth Proportional to 81,213.40, 112,109.04 and 49,392.52

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Solution

The fourth proportional to 81,213.40, 112,109.04 and 49,392.52 is: 68,182.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,213.40 : 112,109.04 = 49,392.52 : x
  2. Step 2: Convert to fraction form
    81,213.40/112,109.04 = 49,392.52/x
  3. Step 3: Cross multiply
    81,213.40x = 112,109.04 × 49,392.52
  4. Step 4: Simplify right side
    81,213.40x = 5,537,348,000.38
  5. Step 5: Solve for x
    x = 5,537,348,000.38/81,213.40
  6. Step 6: Final answer
    x = 68,182.69

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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.