Home / 74,785.06-103,221.10-42,972.41

Finding the Fourth Proportional to 74,785.06, 103,221.10 and 42,972.41

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Solution

The fourth proportional to 74,785.06, 103,221.10 and 42,972.41 is: 59,312.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,785.06 : 103,221.10 = 42,972.41 : x
  2. Step 2: Convert to fraction form
    74,785.06/103,221.10 = 42,972.41/x
  3. Step 3: Cross multiply
    74,785.06x = 103,221.10 × 42,972.41
  4. Step 4: Simplify right side
    74,785.06x = 4,435,659,429.85
  5. Step 5: Solve for x
    x = 4,435,659,429.85/74,785.06
  6. Step 6: Final answer
    x = 59,312.11

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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.