Home / 56,922.09-78,551.57-31,431.09

Finding the Fourth Proportional to 56,922.09, 78,551.57 and 31,431.09

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Solution

The fourth proportional to 56,922.09, 78,551.57 and 31,431.09 is: 43,374.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,922.09 : 78,551.57 = 31,431.09 : x
  2. Step 2: Convert to fraction form
    56,922.09/78,551.57 = 31,431.09/x
  3. Step 3: Cross multiply
    56,922.09x = 78,551.57 × 31,431.09
  4. Step 4: Simplify right side
    56,922.09x = 2,468,961,397.60
  5. Step 5: Solve for x
    x = 2,468,961,397.60/56,922.09
  6. Step 6: Final answer
    x = 43,374.40

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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.