Home / 81,421.28-112,363.20-45,609.44

Finding the Fourth Proportional to 81,421.28, 112,363.20 and 45,609.44

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Solution

The fourth proportional to 81,421.28, 112,363.20 and 45,609.44 is: 62,942.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,421.28 : 112,363.20 = 45,609.44 : x
  2. Step 2: Convert to fraction form
    81,421.28/112,363.20 = 45,609.44/x
  3. Step 3: Cross multiply
    81,421.28x = 112,363.20 × 45,609.44
  4. Step 4: Simplify right side
    81,421.28x = 5,124,822,628.61
  5. Step 5: Solve for x
    x = 5,124,822,628.61/81,421.28
  6. Step 6: Final answer
    x = 62,942.05

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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.