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Finding the Fourth Proportional to 71,598.90, 107,390.12 and 19,012.50

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Solution

The fourth proportional to 71,598.90, 107,390.12 and 19,012.50 is: 28,516.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,598.90 : 107,390.12 = 19,012.50 : x
  2. Step 2: Convert to fraction form
    71,598.90/107,390.12 = 19,012.50/x
  3. Step 3: Cross multiply
    71,598.90x = 107,390.12 × 19,012.50
  4. Step 4: Simplify right side
    71,598.90x = 2,041,754,656.50
  5. Step 5: Solve for x
    x = 2,041,754,656.50/71,598.90
  6. Step 6: Final answer
    x = 28,516.56

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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.