Home / 91,122.86-136,688.40-27,938.37

Finding the Fourth Proportional to 91,122.86, 136,688.40 and 27,938.37

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Solution

The fourth proportional to 91,122.86, 136,688.40 and 27,938.37 is: 41,908.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,122.86 : 136,688.40 = 27,938.37 : x
  2. Step 2: Convert to fraction form
    91,122.86/136,688.40 = 27,938.37/x
  3. Step 3: Cross multiply
    91,122.86x = 136,688.40 × 27,938.37
  4. Step 4: Simplify right side
    91,122.86x = 3,818,851,093.91
  5. Step 5: Solve for x
    x = 3,818,851,093.91/91,122.86
  6. Step 6: Final answer
    x = 41,908.82

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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.