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Finding the Fourth Proportional to 61,380.76, 92,090.60 and 21,937

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Solution

The fourth proportional to 61,380.76, 92,090.60 and 21,937 is: 32,912.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,380.76 : 92,090.60 = 21,937 : x
  2. Step 2: Convert to fraction form
    61,380.76/92,090.60 = 21,937/x
  3. Step 3: Cross multiply
    61,380.76x = 92,090.60 × 21,937
  4. Step 4: Simplify right side
    61,380.76x = 2,020,191,492.20
  5. Step 5: Solve for x
    x = 2,020,191,492.20/61,380.76
  6. Step 6: Final answer
    x = 32,912.45

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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.