Home / 56,835.76-78,431.54-31,343.20

Finding the Fourth Proportional to 56,835.76, 78,431.54 and 31,343.20

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Solution

The fourth proportional to 56,835.76, 78,431.54 and 31,343.20 is: 43,252.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,835.76 : 78,431.54 = 31,343.20 : x
  2. Step 2: Convert to fraction form
    56,835.76/78,431.54 = 31,343.20/x
  3. Step 3: Cross multiply
    56,835.76x = 78,431.54 × 31,343.20
  4. Step 4: Simplify right side
    56,835.76x = 2,458,295,248.45
  5. Step 5: Solve for x
    x = 2,458,295,248.45/56,835.76
  6. Step 6: Final answer
    x = 43,252.62

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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.