Home / 42,578.30-63,906.87-21,533.24

Finding the Fourth Proportional to 42,578.30, 63,906.87 and 21,533.24

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Solution

The fourth proportional to 42,578.30, 63,906.87 and 21,533.24 is: 32,319.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,578.30 : 63,906.87 = 21,533.24 : x
  2. Step 2: Convert to fraction form
    42,578.30/63,906.87 = 21,533.24/x
  3. Step 3: Cross multiply
    42,578.30x = 63,906.87 × 21,533.24
  4. Step 4: Simplify right side
    42,578.30x = 1,376,121,969.36
  5. Step 5: Solve for x
    x = 1,376,121,969.36/42,578.30
  6. Step 6: Final answer
    x = 32,319.80

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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.