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Finding the Fourth Proportional to 70,019.00, 105,028.32 and 30,012.04

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Solution

The fourth proportional to 70,019.00, 105,028.32 and 30,012.04 is: 45,017.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,019.00 : 105,028.32 = 30,012.04 : x
  2. Step 2: Convert to fraction form
    70,019.00/105,028.32 = 30,012.04/x
  3. Step 3: Cross multiply
    70,019.00x = 105,028.32 × 30,012.04
  4. Step 4: Simplify right side
    70,019.00x = 3,152,113,709.61
  5. Step 5: Solve for x
    x = 3,152,113,709.61/70,019.00
  6. Step 6: Final answer
    x = 45,017.98

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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.