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Finding the Fourth Proportional to 71,808.10, 107,712.14 and 19,216.22

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Solution

The fourth proportional to 71,808.10, 107,712.14 and 19,216.22 is: 28,824.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,808.10 : 107,712.14 = 19,216.22 : x
  2. Step 2: Convert to fraction form
    71,808.10/107,712.14 = 19,216.22/x
  3. Step 3: Cross multiply
    71,808.10x = 107,712.14 × 19,216.22
  4. Step 4: Simplify right side
    71,808.10x = 2,069,820,178.91
  5. Step 5: Solve for x
    x = 2,069,820,178.91/71,808.10
  6. Step 6: Final answer
    x = 28,824.33

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1.5x scale

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.