Home / 84,389.65-126,596.76-31,107.13

Finding the Fourth Proportional to 84,389.65, 126,596.76 and 31,107.13

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Solution

The fourth proportional to 84,389.65, 126,596.76 and 31,107.13 is: 46,665.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,389.65 : 126,596.76 = 31,107.13 : x
  2. Step 2: Convert to fraction form
    84,389.65/126,596.76 = 31,107.13/x
  3. Step 3: Cross multiply
    84,389.65x = 126,596.76 × 31,107.13
  4. Step 4: Simplify right side
    84,389.65x = 3,938,061,870.90
  5. Step 5: Solve for x
    x = 3,938,061,870.90/84,389.65
  6. Step 6: Final answer
    x = 46,665.22

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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.