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Finding the Fourth Proportional to 71,009.88, 97,993.71 and 39,178.68

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Solution

The fourth proportional to 71,009.88, 97,993.71 and 39,178.68 is: 54,066.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,009.88 : 97,993.71 = 39,178.68 : x
  2. Step 2: Convert to fraction form
    71,009.88/97,993.71 = 39,178.68/x
  3. Step 3: Cross multiply
    71,009.88x = 97,993.71 × 39,178.68
  4. Step 4: Simplify right side
    71,009.88x = 3,839,264,206.10
  5. Step 5: Solve for x
    x = 3,839,264,206.10/71,009.88
  6. Step 6: Final answer
    x = 54,066.62

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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.