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Finding the Fourth Proportional to 63,090.42, 94,652.63 and 20,977.30

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Solution

The fourth proportional to 63,090.42, 94,652.63 and 20,977.30 is: 31,471.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,090.42 : 94,652.63 = 20,977.30 : x
  2. Step 2: Convert to fraction form
    63,090.42/94,652.63 = 20,977.30/x
  3. Step 3: Cross multiply
    63,090.42x = 94,652.63 × 20,977.30
  4. Step 4: Simplify right side
    63,090.42x = 1,985,556,667.74
  5. Step 5: Solve for x
    x = 1,985,556,667.74/63,090.42
  6. Step 6: Final answer
    x = 31,471.61

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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.