Home / 57,139.56-78,851.48-31,647.65

Finding the Fourth Proportional to 57,139.56, 78,851.48 and 31,647.65

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Solution

The fourth proportional to 57,139.56, 78,851.48 and 31,647.65 is: 43,673.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,139.56 : 78,851.48 = 31,647.65 : x
  2. Step 2: Convert to fraction form
    57,139.56/78,851.48 = 31,647.65/x
  3. Step 3: Cross multiply
    57,139.56x = 78,851.48 × 31,647.65
  4. Step 4: Simplify right side
    57,139.56x = 2,495,463,488.53
  5. Step 5: Solve for x
    x = 2,495,463,488.53/57,139.56
  6. Step 6: Final answer
    x = 43,673.13

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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.