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Finding the Fourth Proportional to 72,761.00, 100,409.79 and 40,930.12

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Solution

The fourth proportional to 72,761.00, 100,409.79 and 40,930.12 is: 56,483.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,761.00 : 100,409.79 = 40,930.12 : x
  2. Step 2: Convert to fraction form
    72,761.00/100,409.79 = 40,930.12/x
  3. Step 3: Cross multiply
    72,761.00x = 100,409.79 × 40,930.12
  4. Step 4: Simplify right side
    72,761.00x = 4,109,785,032.87
  5. Step 5: Solve for x
    x = 4,109,785,032.87/72,761.00
  6. Step 6: Final answer
    x = 56,483.35

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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.