Home / 42,664.80-64,029.20-21,877.60

Finding the Fourth Proportional to 42,664.80, 64,029.20 and 21,877.60

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Solution

The fourth proportional to 42,664.80, 64,029.20 and 21,877.60 is: 32,832.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,664.80 : 64,029.20 = 21,877.60 : x
  2. Step 2: Convert to fraction form
    42,664.80/64,029.20 = 21,877.60/x
  3. Step 3: Cross multiply
    42,664.80x = 64,029.20 × 21,877.60
  4. Step 4: Simplify right side
    42,664.80x = 1,400,805,225.92
  5. Step 5: Solve for x
    x = 1,400,805,225.92/42,664.80
  6. Step 6: Final answer
    x = 32,832.81

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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.