Home / 56,966.40-78,613.56-31,815.90

Finding the Fourth Proportional to 56,966.40, 78,613.56 and 31,815.90

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Solution

The fourth proportional to 56,966.40, 78,613.56 and 31,815.90 is: 43,905.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,966.40 : 78,613.56 = 31,815.90 : x
  2. Step 2: Convert to fraction form
    56,966.40/78,613.56 = 31,815.90/x
  3. Step 3: Cross multiply
    56,966.40x = 78,613.56 × 31,815.90
  4. Step 4: Simplify right side
    56,966.40x = 2,501,161,163.60
  5. Step 5: Solve for x
    x = 2,501,161,163.60/56,966.40
  6. Step 6: Final answer
    x = 43,905.90

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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.