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Finding the Fourth Proportional to 73,405.90, 101,819.86 and 70,888.42

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Solution

The fourth proportional to 73,405.90, 101,819.86 and 70,888.42 is: 98,327.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,405.90 : 101,819.86 = 70,888.42 : x
  2. Step 2: Convert to fraction form
    73,405.90/101,819.86 = 70,888.42/x
  3. Step 3: Cross multiply
    73,405.90x = 101,819.86 × 70,888.42
  4. Step 4: Simplify right side
    73,405.90x = 7,217,849,000.02
  5. Step 5: Solve for x
    x = 7,217,849,000.02/73,405.90
  6. Step 6: Final answer
    x = 98,327.91

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.