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Finding the Fourth Proportional to 71,599.51, 107,390.85 and 19,013.05

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Solution

The fourth proportional to 71,599.51, 107,390.85 and 19,013.05 is: 28,517.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,599.51 : 107,390.85 = 19,013.05 : x
  2. Step 2: Convert to fraction form
    71,599.51/107,390.85 = 19,013.05/x
  3. Step 3: Cross multiply
    71,599.51x = 107,390.85 × 19,013.05
  4. Step 4: Simplify right side
    71,599.51x = 2,041,827,600.59
  5. Step 5: Solve for x
    x = 2,041,827,600.59/71,599.51
  6. Step 6: Final answer
    x = 28,517.34

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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.