Home / 71,748.06-99,012.31-39,916.95

Finding the Fourth Proportional to 71,748.06, 99,012.31 and 39,916.95

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Solution

The fourth proportional to 71,748.06, 99,012.31 and 39,916.95 is: 55,085.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,748.06 : 99,012.31 = 39,916.95 : x
  2. Step 2: Convert to fraction form
    71,748.06/99,012.31 = 39,916.95/x
  3. Step 3: Cross multiply
    71,748.06x = 99,012.31 × 39,916.95
  4. Step 4: Simplify right side
    71,748.06x = 3,952,269,427.65
  5. Step 5: Solve for x
    x = 3,952,269,427.65/71,748.06
  6. Step 6: Final answer
    x = 55,085.38

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1.5x scale

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.