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Finding the Fourth Proportional to 73,479.60, 101,400.60 and 39,945.36

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Solution

The fourth proportional to 73,479.60, 101,400.60 and 39,945.36 is: 55,123.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,479.60 : 101,400.60 = 39,945.36 : x
  2. Step 2: Convert to fraction form
    73,479.60/101,400.60 = 39,945.36/x
  3. Step 3: Cross multiply
    73,479.60x = 101,400.60 × 39,945.36
  4. Step 4: Simplify right side
    73,479.60x = 4,050,483,471.22
  5. Step 5: Solve for x
    x = 4,050,483,471.22/73,479.60
  6. Step 6: Final answer
    x = 55,123.92

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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.