Home / 81,690.03-112,723.76-54,827.07

Finding the Fourth Proportional to 81,690.03, 112,723.76 and 54,827.07

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Solution

The fourth proportional to 81,690.03, 112,723.76 and 54,827.07 is: 75,655.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,690.03 : 112,723.76 = 54,827.07 : x
  2. Step 2: Convert to fraction form
    81,690.03/112,723.76 = 54,827.07/x
  3. Step 3: Cross multiply
    81,690.03x = 112,723.76 × 54,827.07
  4. Step 4: Simplify right side
    81,690.03x = 6,180,313,206.05
  5. Step 5: Solve for x
    x = 6,180,313,206.05/81,690.03
  6. Step 6: Final answer
    x = 75,655.66

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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.