Home / 91,098.48-136,674.36-31,938.96

Finding the Fourth Proportional to 91,098.48, 136,674.36 and 31,938.96

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Solution

The fourth proportional to 91,098.48, 136,674.36 and 31,938.96 is: 47,917.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,098.48 : 136,674.36 = 31,938.96 : x
  2. Step 2: Convert to fraction form
    91,098.48/136,674.36 = 31,938.96/x
  3. Step 3: Cross multiply
    91,098.48x = 136,674.36 × 31,938.96
  4. Step 4: Simplify right side
    91,098.48x = 4,365,236,917.07
  5. Step 5: Solve for x
    x = 4,365,236,917.07/91,098.48
  6. Step 6: Final answer
    x = 47,917.78

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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.