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Finding the Fourth Proportional to 70,507.84, 105,794.05 and 30,539.05

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Solution

The fourth proportional to 70,507.84, 105,794.05 and 30,539.05 is: 45,822.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,507.84 : 105,794.05 = 30,539.05 : x
  2. Step 2: Convert to fraction form
    70,507.84/105,794.05 = 30,539.05/x
  3. Step 3: Cross multiply
    70,507.84x = 105,794.05 × 30,539.05
  4. Step 4: Simplify right side
    70,507.84x = 3,230,849,556.34
  5. Step 5: Solve for x
    x = 3,230,849,556.34/70,507.84
  6. Step 6: Final answer
    x = 45,822.56

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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.