Home / 45,878.48-68,808.84-20,911.52

Finding the Fourth Proportional to 45,878.48, 68,808.84 and 20,911.52

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Solution

The fourth proportional to 45,878.48, 68,808.84 and 20,911.52 is: 31,363.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,878.48 : 68,808.84 = 20,911.52 : x
  2. Step 2: Convert to fraction form
    45,878.48/68,808.84 = 20,911.52/x
  3. Step 3: Cross multiply
    45,878.48x = 68,808.84 × 20,911.52
  4. Step 4: Simplify right side
    45,878.48x = 1,438,897,433.84
  5. Step 5: Solve for x
    x = 1,438,897,433.84/45,878.48
  6. Step 6: Final answer
    x = 31,363.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.