Home / 64,772.36-89,387.22-39,279.56

Finding the Fourth Proportional to 64,772.36, 89,387.22 and 39,279.56

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Solution

The fourth proportional to 64,772.36, 89,387.22 and 39,279.56 is: 54,206.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,772.36 : 89,387.22 = 39,279.56 : x
  2. Step 2: Convert to fraction form
    64,772.36/89,387.22 = 39,279.56/x
  3. Step 3: Cross multiply
    64,772.36x = 89,387.22 × 39,279.56
  4. Step 4: Simplify right side
    64,772.36x = 3,511,090,671.22
  5. Step 5: Solve for x
    x = 3,511,090,671.22/64,772.36
  6. Step 6: Final answer
    x = 54,206.62

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1.5x scale

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.