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Finding the Fourth Proportional to 73,399.36, 101,290.56 and 39,865.60

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Solution

The fourth proportional to 73,399.36, 101,290.56 and 39,865.60 is: 55,014.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,399.36 : 101,290.56 = 39,865.60 : x
  2. Step 2: Convert to fraction form
    73,399.36/101,290.56 = 39,865.60/x
  3. Step 3: Cross multiply
    73,399.36x = 101,290.56 × 39,865.60
  4. Step 4: Simplify right side
    73,399.36x = 4,038,008,948.74
  5. Step 5: Solve for x
    x = 4,038,008,948.74/73,399.36
  6. Step 6: Final answer
    x = 55,014.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.