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Finding the Fourth Proportional to 61,563.95, 91,900.74 and 54,090.56

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Solution

The fourth proportional to 61,563.95, 91,900.74 and 54,090.56 is: 80,744.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,563.95 : 91,900.74 = 54,090.56 : x
  2. Step 2: Convert to fraction form
    61,563.95/91,900.74 = 54,090.56/x
  3. Step 3: Cross multiply
    61,563.95x = 91,900.74 × 54,090.56
  4. Step 4: Simplify right side
    61,563.95x = 4,970,962,031.51
  5. Step 5: Solve for x
    x = 4,970,962,031.51/61,563.95
  6. Step 6: Final answer
    x = 80,744.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.