Home / 57,057.12-78,712.30-36,920.48

Finding the Fourth Proportional to 57,057.12, 78,712.30 and 36,920.48

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Solution

The fourth proportional to 57,057.12, 78,712.30 and 36,920.48 is: 50,933.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,057.12 : 78,712.30 = 36,920.48 : x
  2. Step 2: Convert to fraction form
    57,057.12/78,712.30 = 36,920.48/x
  3. Step 3: Cross multiply
    57,057.12x = 78,712.30 × 36,920.48
  4. Step 4: Simplify right side
    57,057.12x = 2,906,095,897.90
  5. Step 5: Solve for x
    x = 2,906,095,897.90/57,057.12
  6. Step 6: Final answer
    x = 50,933.10

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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.