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Finding the Fourth Proportional to 91,361.66, 137,008.31 and 31,373.10

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Solution

The fourth proportional to 91,361.66, 137,008.31 and 31,373.10 is: 47,047.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,361.66 : 137,008.31 = 31,373.10 : x
  2. Step 2: Convert to fraction form
    91,361.66/137,008.31 = 31,373.10/x
  3. Step 3: Cross multiply
    91,361.66x = 137,008.31 × 31,373.10
  4. Step 4: Simplify right side
    91,361.66x = 4,298,375,253.60
  5. Step 5: Solve for x
    x = 4,298,375,253.60/91,361.66
  6. Step 6: Final answer
    x = 47,047.91

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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.