Home / 57,781.14-86,671.60-21,764.32

Finding the Fourth Proportional to 57,781.14, 86,671.60 and 21,764.32

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Solution

The fourth proportional to 57,781.14, 86,671.60 and 21,764.32 is: 32,646.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,781.14 : 86,671.60 = 21,764.32 : x
  2. Step 2: Convert to fraction form
    57,781.14/86,671.60 = 21,764.32/x
  3. Step 3: Cross multiply
    57,781.14x = 86,671.60 × 21,764.32
  4. Step 4: Simplify right side
    57,781.14x = 1,886,348,437.31
  5. Step 5: Solve for x
    x = 1,886,348,437.31/57,781.14
  6. Step 6: Final answer
    x = 32,646.44

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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.