Home / 74,037.60-111,129.30-36,639.90

Finding the Fourth Proportional to 74,037.60, 111,129.30 and 36,639.90

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Solution

The fourth proportional to 74,037.60, 111,129.30 and 36,639.90 is: 54,995.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,037.60 : 111,129.30 = 36,639.90 : x
  2. Step 2: Convert to fraction form
    74,037.60/111,129.30 = 36,639.90/x
  3. Step 3: Cross multiply
    74,037.60x = 111,129.30 × 36,639.90
  4. Step 4: Simplify right side
    74,037.60x = 4,071,766,439.07
  5. Step 5: Solve for x
    x = 4,071,766,439.07/74,037.60
  6. Step 6: Final answer
    x = 54,995.93

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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.