Home / 86,636.40-129,997.80-49,225.20

Finding the Fourth Proportional to 86,636.40, 129,997.80 and 49,225.20

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Solution

The fourth proportional to 86,636.40, 129,997.80 and 49,225.20 is: 73,862.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,636.40 : 129,997.80 = 49,225.20 : x
  2. Step 2: Convert to fraction form
    86,636.40/129,997.80 = 49,225.20/x
  3. Step 3: Cross multiply
    86,636.40x = 129,997.80 × 49,225.20
  4. Step 4: Simplify right side
    86,636.40x = 6,399,167,704.56
  5. Step 5: Solve for x
    x = 6,399,167,704.56/86,636.40
  6. Step 6: Final answer
    x = 73,862.35

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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.