Home / 57,877.72-86,817.64-20,436.88

Finding the Fourth Proportional to 57,877.72, 86,817.64 and 20,436.88

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Solution

The fourth proportional to 57,877.72, 86,817.64 and 20,436.88 is: 30,655.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,877.72 : 86,817.64 = 20,436.88 : x
  2. Step 2: Convert to fraction form
    57,877.72/86,817.64 = 20,436.88/x
  3. Step 3: Cross multiply
    57,877.72x = 86,817.64 × 20,436.88
  4. Step 4: Simplify right side
    57,877.72x = 1,774,281,690.56
  5. Step 5: Solve for x
    x = 1,774,281,690.56/57,877.72
  6. Step 6: Final answer
    x = 30,655.69

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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.