Home / 56,543.20-84,781.50-21,485.32

Finding the Fourth Proportional to 56,543.20, 84,781.50 and 21,485.32

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Solution

The fourth proportional to 56,543.20, 84,781.50 and 21,485.32 is: 32,215.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,543.20 : 84,781.50 = 21,485.32 : x
  2. Step 2: Convert to fraction form
    56,543.20/84,781.50 = 21,485.32/x
  3. Step 3: Cross multiply
    56,543.20x = 84,781.50 × 21,485.32
  4. Step 4: Simplify right side
    56,543.20x = 1,821,557,657.58
  5. Step 5: Solve for x
    x = 1,821,557,657.58/56,543.20
  6. Step 6: Final answer
    x = 32,215.33

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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.