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Finding the Fourth Proportional to 70,329, 105,487.98 and 30,886.44

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Solution

The fourth proportional to 70,329, 105,487.98 and 30,886.44 is: 46,327.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,329 : 105,487.98 = 30,886.44 : x
  2. Step 2: Convert to fraction form
    70,329/105,487.98 = 30,886.44/x
  3. Step 3: Cross multiply
    70,329x = 105,487.98 × 30,886.44
  4. Step 4: Simplify right side
    70,329x = 3,258,148,164.99
  5. Step 5: Solve for x
    x = 3,258,148,164.99/70,329
  6. Step 6: Final answer
    x = 46,327.24

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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.