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Finding the Fourth Proportional to 56,685.20, 85,027.80 and 25,581.20

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Solution

The fourth proportional to 56,685.20, 85,027.80 and 25,581.20 is: 38,371.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,685.20 : 85,027.80 = 25,581.20 : x
  2. Step 2: Convert to fraction form
    56,685.20/85,027.80 = 25,581.20/x
  3. Step 3: Cross multiply
    56,685.20x = 85,027.80 × 25,581.20
  4. Step 4: Simplify right side
    56,685.20x = 2,175,113,157.36
  5. Step 5: Solve for x
    x = 2,175,113,157.36/56,685.20
  6. Step 6: Final answer
    x = 38,371.80

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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.