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Finding the Fourth Proportional to 71,763.04, 99,028.47 and 39,931.12

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Solution

The fourth proportional to 71,763.04, 99,028.47 and 39,931.12 is: 55,102.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,763.04 : 99,028.47 = 39,931.12 : x
  2. Step 2: Convert to fraction form
    71,763.04/99,028.47 = 39,931.12/x
  3. Step 3: Cross multiply
    71,763.04x = 99,028.47 × 39,931.12
  4. Step 4: Simplify right side
    71,763.04x = 3,954,317,718.99
  5. Step 5: Solve for x
    x = 3,954,317,718.99/71,763.04
  6. Step 6: Final answer
    x = 55,102.43

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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.