Home / 42,272.64-63,448.32-21,511.68

Finding the Fourth Proportional to 42,272.64, 63,448.32 and 21,511.68

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Solution

The fourth proportional to 42,272.64, 63,448.32 and 21,511.68 is: 32,287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,272.64 : 63,448.32 = 21,511.68 : x
  2. Step 2: Convert to fraction form
    42,272.64/63,448.32 = 21,511.68/x
  3. Step 3: Cross multiply
    42,272.64x = 63,448.32 × 21,511.68
  4. Step 4: Simplify right side
    42,272.64x = 1,364,879,956.38
  5. Step 5: Solve for x
    x = 1,364,879,956.38/42,272.64
  6. Step 6: Final answer
    x = 32,287.55

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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.