Home / 56,418.15-84,631.50-18,978.33

Finding the Fourth Proportional to 56,418.15, 84,631.50 and 18,978.33

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Solution

The fourth proportional to 56,418.15, 84,631.50 and 18,978.33 is: 28,468.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,418.15 : 84,631.50 = 18,978.33 : x
  2. Step 2: Convert to fraction form
    56,418.15/84,631.50 = 18,978.33/x
  3. Step 3: Cross multiply
    56,418.15x = 84,631.50 × 18,978.33
  4. Step 4: Simplify right side
    56,418.15x = 1,606,164,535.40
  5. Step 5: Solve for x
    x = 1,606,164,535.40/56,418.15
  6. Step 6: Final answer
    x = 28,468.93

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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.