Home / 81,938.96-122,956.16-34,551.12

Finding the Fourth Proportional to 81,938.96, 122,956.16 and 34,551.12

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Solution

The fourth proportional to 81,938.96, 122,956.16 and 34,551.12 is: 51,846.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,938.96 : 122,956.16 = 34,551.12 : x
  2. Step 2: Convert to fraction form
    81,938.96/122,956.16 = 34,551.12/x
  3. Step 3: Cross multiply
    81,938.96x = 122,956.16 × 34,551.12
  4. Step 4: Simplify right side
    81,938.96x = 4,248,273,038.90
  5. Step 5: Solve for x
    x = 4,248,273,038.90/81,938.96
  6. Step 6: Final answer
    x = 51,846.80

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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.