Home / 91,448.40-137,172.60-29,125.20

Finding the Fourth Proportional to 91,448.40, 137,172.60 and 29,125.20

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Solution

The fourth proportional to 91,448.40, 137,172.60 and 29,125.20 is: 43,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,448.40 : 137,172.60 = 29,125.20 : x
  2. Step 2: Convert to fraction form
    91,448.40/137,172.60 = 29,125.20/x
  3. Step 3: Cross multiply
    91,448.40x = 137,172.60 × 29,125.20
  4. Step 4: Simplify right side
    91,448.40x = 3,995,179,409.52
  5. Step 5: Solve for x
    x = 3,995,179,409.52/91,448.40
  6. Step 6: Final answer
    x = 43,687.80

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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.