Home / 81,357.30-122,037.03-28,729.98

Finding the Fourth Proportional to 81,357.30, 122,037.03 and 28,729.98

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Solution

The fourth proportional to 81,357.30, 122,037.03 and 28,729.98 is: 43,095.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,357.30 : 122,037.03 = 28,729.98 : x
  2. Step 2: Convert to fraction form
    81,357.30/122,037.03 = 28,729.98/x
  3. Step 3: Cross multiply
    81,357.30x = 122,037.03 × 28,729.98
  4. Step 4: Simplify right side
    81,357.30x = 3,506,121,431.16
  5. Step 5: Solve for x
    x = 3,506,121,431.16/81,357.30
  6. Step 6: Final answer
    x = 43,095.35

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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.