Home / 71,143.72-106,577.34-39,999.40

Finding the Fourth Proportional to 71,143.72, 106,577.34 and 39,999.40

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Solution

The fourth proportional to 71,143.72, 106,577.34 and 39,999.40 is: 59,921.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,143.72 : 106,577.34 = 39,999.40 : x
  2. Step 2: Convert to fraction form
    71,143.72/106,577.34 = 39,999.40/x
  3. Step 3: Cross multiply
    71,143.72x = 106,577.34 × 39,999.40
  4. Step 4: Simplify right side
    71,143.72x = 4,263,029,653.60
  5. Step 5: Solve for x
    x = 4,263,029,653.60/71,143.72
  6. Step 6: Final answer
    x = 59,921.38

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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.