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Finding the Fourth Proportional to 70,907.47, 97,739.26 and 69,507.79

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Solution

The fourth proportional to 70,907.47, 97,739.26 and 69,507.79 is: 95,809.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,907.47 : 97,739.26 = 69,507.79 : x
  2. Step 2: Convert to fraction form
    70,907.47/97,739.26 = 69,507.79/x
  3. Step 3: Cross multiply
    70,907.47x = 97,739.26 × 69,507.79
  4. Step 4: Simplify right side
    70,907.47x = 6,793,639,958.84
  5. Step 5: Solve for x
    x = 6,793,639,958.84/70,907.47
  6. Step 6: Final answer
    x = 95,809.93

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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.