Home / 70,669.38-105,829.08-39,439.02

Finding the Fourth Proportional to 70,669.38, 105,829.08 and 39,439.02

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Solution

The fourth proportional to 70,669.38, 105,829.08 and 39,439.02 is: 59,060.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,669.38 : 105,829.08 = 39,439.02 : x
  2. Step 2: Convert to fraction form
    70,669.38/105,829.08 = 39,439.02/x
  3. Step 3: Cross multiply
    70,669.38x = 105,829.08 × 39,439.02
  4. Step 4: Simplify right side
    70,669.38x = 4,173,795,202.70
  5. Step 5: Solve for x
    x = 4,173,795,202.70/70,669.38
  6. Step 6: Final answer
    x = 59,060.87

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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.