Home / 43,220-64,837.85-21,033.39

Finding the Fourth Proportional to 43,220, 64,837.85 and 21,033.39

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Solution

The fourth proportional to 43,220, 64,837.85 and 21,033.39 is: 31,553.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,220 : 64,837.85 = 21,033.39 : x
  2. Step 2: Convert to fraction form
    43,220/64,837.85 = 21,033.39/x
  3. Step 3: Cross multiply
    43,220x = 64,837.85 × 21,033.39
  4. Step 4: Simplify right side
    43,220x = 1,363,759,785.81
  5. Step 5: Solve for x
    x = 1,363,759,785.81/43,220
  6. Step 6: Final answer
    x = 31,553.91

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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.