Home / 81,218.96-112,044.84-47,661.20

Finding the Fourth Proportional to 81,218.96, 112,044.84 and 47,661.20

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Solution

The fourth proportional to 81,218.96, 112,044.84 and 47,661.20 is: 65,750.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,218.96 : 112,044.84 = 47,661.20 : x
  2. Step 2: Convert to fraction form
    81,218.96/112,044.84 = 47,661.20/x
  3. Step 3: Cross multiply
    81,218.96x = 112,044.84 × 47,661.20
  4. Step 4: Simplify right side
    81,218.96x = 5,340,191,528.21
  5. Step 5: Solve for x
    x = 5,340,191,528.21/81,218.96
  6. Step 6: Final answer
    x = 65,750.55

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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.