Home / 42,104.40-63,039.96-21,225.84

Finding the Fourth Proportional to 42,104.40, 63,039.96 and 21,225.84

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Solution

The fourth proportional to 42,104.40, 63,039.96 and 21,225.84 is: 31,779.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,104.40 : 63,039.96 = 21,225.84 : x
  2. Step 2: Convert to fraction form
    42,104.40/63,039.96 = 21,225.84/x
  3. Step 3: Cross multiply
    42,104.40x = 63,039.96 × 21,225.84
  4. Step 4: Simplify right side
    42,104.40x = 1,338,076,104.57
  5. Step 5: Solve for x
    x = 1,338,076,104.57/42,104.40
  6. Step 6: Final answer
    x = 31,779.96

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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.