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Finding the Fourth Proportional to 56,899.80, 78,509.16 and 33,012.64

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Solution

The fourth proportional to 56,899.80, 78,509.16 and 33,012.64 is: 45,550.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,899.80 : 78,509.16 = 33,012.64 : x
  2. Step 2: Convert to fraction form
    56,899.80/78,509.16 = 33,012.64/x
  3. Step 3: Cross multiply
    56,899.80x = 78,509.16 × 33,012.64
  4. Step 4: Simplify right side
    56,899.80x = 2,591,794,635.78
  5. Step 5: Solve for x
    x = 2,591,794,635.78/56,899.80
  6. Step 6: Final answer
    x = 45,550.15

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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.