Home / 90,651.27-124,997.90-61,975.60

Finding the Fourth Proportional to 90,651.27, 124,997.90 and 61,975.60

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Solution

The fourth proportional to 90,651.27, 124,997.90 and 61,975.60 is: 85,457.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,651.27 : 124,997.90 = 61,975.60 : x
  2. Step 2: Convert to fraction form
    90,651.27/124,997.90 = 61,975.60/x
  3. Step 3: Cross multiply
    90,651.27x = 124,997.90 × 61,975.60
  4. Step 4: Simplify right side
    90,651.27x = 7,746,819,577.48
  5. Step 5: Solve for x
    x = 7,746,819,577.48/90,651.27
  6. Step 6: Final answer
    x = 85,457.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.