Home / 42,543.12-63,771.12-19,185.96

Finding the Fourth Proportional to 42,543.12, 63,771.12 and 19,185.96

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Solution

The fourth proportional to 42,543.12, 63,771.12 and 19,185.96 is: 28,759.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,543.12 : 63,771.12 = 19,185.96 : x
  2. Step 2: Convert to fraction form
    42,543.12/63,771.12 = 19,185.96/x
  3. Step 3: Cross multiply
    42,543.12x = 63,771.12 × 19,185.96
  4. Step 4: Simplify right side
    42,543.12x = 1,223,510,157.48
  5. Step 5: Solve for x
    x = 1,223,510,157.48/42,543.12
  6. Step 6: Final answer
    x = 28,759.30

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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.