Home / 42,145.36-63,235.02-18,755.80

Finding the Fourth Proportional to 42,145.36, 63,235.02 and 18,755.80

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Solution

The fourth proportional to 42,145.36, 63,235.02 and 18,755.80 is: 28,141.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,145.36 : 63,235.02 = 18,755.80 : x
  2. Step 2: Convert to fraction form
    42,145.36/63,235.02 = 18,755.80/x
  3. Step 3: Cross multiply
    42,145.36x = 63,235.02 × 18,755.80
  4. Step 4: Simplify right side
    42,145.36x = 1,186,023,388.12
  5. Step 5: Solve for x
    x = 1,186,023,388.12/42,145.36
  6. Step 6: Final answer
    x = 28,141.26

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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.