Home / 57,011.82-78,702.75-33,129.78

Finding the Fourth Proportional to 57,011.82, 78,702.75 and 33,129.78

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Solution

The fourth proportional to 57,011.82, 78,702.75 and 33,129.78 is: 45,734.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,011.82 : 78,702.75 = 33,129.78 : x
  2. Step 2: Convert to fraction form
    57,011.82/78,702.75 = 33,129.78/x
  3. Step 3: Cross multiply
    57,011.82x = 78,702.75 × 33,129.78
  4. Step 4: Simplify right side
    57,011.82x = 2,607,404,792.90
  5. Step 5: Solve for x
    x = 2,607,404,792.90/57,011.82
  6. Step 6: Final answer
    x = 45,734.46

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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.