Home / 56,440.31-84,600.80-20,878.79

Finding the Fourth Proportional to 56,440.31, 84,600.80 and 20,878.79

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Solution

The fourth proportional to 56,440.31, 84,600.80 and 20,878.79 is: 31,296.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,440.31 : 84,600.80 = 20,878.79 : x
  2. Step 2: Convert to fraction form
    56,440.31/84,600.80 = 20,878.79/x
  3. Step 3: Cross multiply
    56,440.31x = 84,600.80 × 20,878.79
  4. Step 4: Simplify right side
    56,440.31x = 1,766,362,362.28
  5. Step 5: Solve for x
    x = 1,766,362,362.28/56,440.31
  6. Step 6: Final answer
    x = 31,296.11

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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.