Home / 56,415.14-84,539.52-31,420.76

Finding the Fourth Proportional to 56,415.14, 84,539.52 and 31,420.76

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Solution

The fourth proportional to 56,415.14, 84,539.52 and 31,420.76 is: 47,084.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,415.14 : 84,539.52 = 31,420.76 : x
  2. Step 2: Convert to fraction form
    56,415.14/84,539.52 = 31,420.76/x
  3. Step 3: Cross multiply
    56,415.14x = 84,539.52 × 31,420.76
  4. Step 4: Simplify right side
    56,415.14x = 2,656,295,968.44
  5. Step 5: Solve for x
    x = 2,656,295,968.44/56,415.14
  6. Step 6: Final answer
    x = 47,084.81

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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.