Home / 57,084.70-78,776.77-31,934.20

Finding the Fourth Proportional to 57,084.70, 78,776.77 and 31,934.20

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Solution

The fourth proportional to 57,084.70, 78,776.77 and 31,934.20 is: 44,069.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,084.70 : 78,776.77 = 31,934.20 : x
  2. Step 2: Convert to fraction form
    57,084.70/78,776.77 = 31,934.20/x
  3. Step 3: Cross multiply
    57,084.70x = 78,776.77 × 31,934.20
  4. Step 4: Simplify right side
    57,084.70x = 2,515,673,128.53
  5. Step 5: Solve for x
    x = 2,515,673,128.53/57,084.70
  6. Step 6: Final answer
    x = 44,069.13

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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.