Home / 71,719.98-98,972.16-39,888.19

Finding the Fourth Proportional to 71,719.98, 98,972.16 and 39,888.19

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Solution

The fourth proportional to 71,719.98, 98,972.16 and 39,888.19 is: 55,044.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,719.98 : 98,972.16 = 39,888.19 : x
  2. Step 2: Convert to fraction form
    71,719.98/98,972.16 = 39,888.19/x
  3. Step 3: Cross multiply
    71,719.98x = 98,972.16 × 39,888.19
  4. Step 4: Simplify right side
    71,719.98x = 3,947,820,296.92
  5. Step 5: Solve for x
    x = 3,947,820,296.92/71,719.98
  6. Step 6: Final answer
    x = 55,044.92

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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.