Home / 114,990.12-172,459.26-31,890.60

Finding the Fourth Proportional to 114,990.12, 172,459.26 and 31,890.60

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Solution

The fourth proportional to 114,990.12, 172,459.26 and 31,890.60 is: 47,828.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,990.12 : 172,459.26 = 31,890.60 : x
  2. Step 2: Convert to fraction form
    114,990.12/172,459.26 = 31,890.60/x
  3. Step 3: Cross multiply
    114,990.12x = 172,459.26 × 31,890.60
  4. Step 4: Simplify right side
    114,990.12x = 5,499,829,276.96
  5. Step 5: Solve for x
    x = 5,499,829,276.96/114,990.12
  6. Step 6: Final answer
    x = 47,828.71

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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.