Home / 56,821.96-78,416.16-31,329.40

Finding the Fourth Proportional to 56,821.96, 78,416.16 and 31,329.40

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Solution

The fourth proportional to 56,821.96, 78,416.16 and 31,329.40 is: 43,235.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,821.96 : 78,416.16 = 31,329.40 : x
  2. Step 2: Convert to fraction form
    56,821.96/78,416.16 = 31,329.40/x
  3. Step 3: Cross multiply
    56,821.96x = 78,416.16 × 31,329.40
  4. Step 4: Simplify right side
    56,821.96x = 2,456,731,243.10
  5. Step 5: Solve for x
    x = 2,456,731,243.10/56,821.96
  6. Step 6: Final answer
    x = 43,235.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.